In December 1994, Croatia and the RSK made an economic agreement to restore road and rail links, water and gas supplies and use of a part of the Adria oil pipeline. Even though a part of the agreement was never implemented, the pipeline and a 23.2-kilometre (14.4 mi) section of the Zagreb–Belgrade motorway passing through RSK territory around Okučani were opened, shortening travel from the capital to Slavonia by several hours. Since its opening, the motorway section became of strategic importance both to Croatia and the RSK in further negotiations. The section was closed by the RSK for 24 hours on 24 April, in response to increased control of commercial traffic leaving the RSK held territory in the eastern Slavonia—likely increasing Croatian resolve to capture the area through military action. The controls were put in place by the United Nations Security Council Resolution 981 of 31 March 1995, establishing the United Nations Confidence Restoration Operation (UNCRO) peacekeeping force instead of UNPROFOR, and tasked the force with monitoring of Croatian international borders separating the RSK-held territory from Yugoslavia or Bosnia and Herzegovina, as well as facilitating the latest Croatia–RSK ceasefire of 29 March 1994, and the December 1994 economic agreement.
The situation worsened again on 28 April, when a Serb was stabbed by a Croat refugee—both of them living in the same village before 1991—at a filling station adjacent to the motorway, situated in Croatian controlled territory near Nova Gradiška. In response, a group of Serbs, including a brother of the killed man, fired on vehicles on the motorway which remained open despite a UNCRO request to Croatia to close the route. Three civilians were killed in the shooting and RSK soldiers arrested five. The shooting stopped by 1 am, and the five were released in the morning and the UNCRO demanded that the motorway be reopened. The RSK 18th Corps and the chief of police in Okučani declined on instructions from the RSK leadership in Knin, but later agreed to reopen the road on 1 May at 6 am. However, the decision to reopen the motorway was cancelled on 30 April at 8 pm. The same night, three rocket-propelled grenades were fired into the Croatian-controlled part of Pakrac and a vehicle was attacked on the Pakrac–Požega road located close to RSK positions, the latter resulting in one dead and one captured civilian. Hrvoje Šarinić, an advisor to Tuđman, confirmed that Croatia contemplated staging an incident which would provoke a military capture of the motorway area, but he also denied that one was needed as incidents were known to occur on a regular basis.
Croatia deployed 7,200 troops to conduct the attack, including elements of three guards brigades and an independent guards battalion supported by special forces of the Croatian Police and reserve HV and Home Guard troops. The 18th West Slavonian Corps of the RSK, defending the area, was expected to have 4,773 troops at its disposal, as it ordered mobilization of the troops on 28–29 April. The move brought the 18th Corps, commanded by Colonel Lazo Babić, to strength of about 4,500 troops. An RSK commission set up to evaluate the battle claimed that some of the RSK units were not able to retrieve antitank weapons from UNCRO depots in Stara Gradiška and near Pakrac until after the offensive began. The weapons were stored there pursuant to the March 1994 ceasefire agreement. Nonetheless, the UNCRO did not resist the RSK troops removing the stored weapons.
Initial On 1 May 1995, Šarinić informed UNCRO of the imminent HV offensive in a telephone call to the Canadian general Raymond Crabbe at 4 am designed to let the UNCRO troops seek shelter in time. Operation Flash started through an artillery preparatory bombardment of RSK held positions at 4:30 am. Infantry and armour attacks converging from Novska, Nova Gradiška and Pakrac at Okučani and an attack from Novska towards Jasenovac commenced at various times between 5:30 and 7 am. The artillery and CAF strikes caused panic in the RSK rear, but did not take out the Sava River bridge in Stara Gradiška. Bobetko was concerned about the RSK tanks located in the town as a possible counter-attack force and requested that the CAF use its Mil Mi-24s to prevent the RSK armour from intervening.
On the Nova Gradiška–Okučani axis, the RSK 54th Infantry Brigade held positions east of Okučani, facing the 4th Battalion of the 5th Guards Brigade, the 81st Guards Battalion, an armoured company of the 123rd Brigade and the 121st Home Guard Regiment of the HV. Due to a breakdown in the chain of command, the HV attack was delayed, forcing the 81st Guards Battalion to face well prepared defenders in Dragalić. Stipetić, who toured the front line personally, reported that the delay was up to two and a half hours. In response, the HV redirected the 4th Battalion of the 5th Guards Brigade, the 265th Reconnaissance Sabotage Company and the armoured company of the 123rd Brigade to dislodge the RSK troops. The RSK 54th Infantry Brigade put up strong resistance until 9 am, when its commander ordered a retreat. Still, the HV force captured the village of Bijela Stijena on the Okučani–Pakrac road and encircled Okučani by 11 pm on 1 May, before suspending its advance for the night. The capture of Bijela Stijena effectively isolated the RSK 51st Infantry Brigade, the 59th and the 63rd Detachments and the RSK Special police battalion, as well as the 1st Battalion of the 54th Infantry Brigade and the 2nd Battalion of the 98th Infantry Brigade north of Okučani. Furthermore, the RSK force near Pakrac could not communicate with the Corps command because their communication system failed. In the Pakrac area, the HV deployed the 105th Infantry Brigade and the 52nd Home Guard Regiment. It was estimated that the RSK forces there were well entrenched and that the HV chose to envelop and pin them down rather than engage in any large-scale combat.
The HV resumed its advance in the early morning of 2 May. The retreating elements of the RSK 98th and 54th Infantry Brigades mixed with civilians evacuating south towards the Republika Srpska clashed with the 265th Reconnaissance Sabotage Company near Novi Varoš, but managed to continue south. The RSK 18th Corps moved its headquarters from Stara Gradiška across the Sava River to Gradiška in Republika Srpska against the orders of General Milan Čeleketić, the chief of the RSK General Staff. The HV captured Okučani at 1 pm as the HV pincers advancing from Novska and Nova Gradiška met. At about the same time, the command of the RSK 54th Infantry Brigade arrived to Stara Gradiška having evacuated from Okučani, and ordered an artillery strike on Nova Gradiška in retaliation. Even though a token support of 195 RSK troops arrived to the area from eastern Slavonia, they refused to fight upon learning of the developments on the battleground.
The RSK leadership decided to retaliate against Croatia by ordering the artillery bombardment of Croatian urban centres. On 2 May, the RSK military attacked Zagreb and Zagreb Airport using eleven M-87 Orkan rockets carrying cluster munitions. The attack was repeated the next day. Six civilians were killed and 205 injured in the two attacks, while a policeman was killed defusing one of 500 unexploded bomblets. United States ambassador to Croatia, Peter Galbraith called the attack a declaration of an all-out war.
On 3 May, Croatia and the RSK reached an agreement, mediated by the personal representative of the Secretary-General of the United Nations Yasushi Akashi, to end hostilities by 4 pm later that day. Consequently, the RSK General Staff instructed the 18th Western Slavonian Corps to cease fire at 3 pm. Babić in turn ordered Lieutenant Colonel Stevo Harambašić, the commanding officer of the RSK 51st Infantry Division to surrender 7,000 troops and civilians encircled by the HV south of Pakrac to the Argentine UNCRO battalion—as agreed by with the Croatian authorities. Harambašić and about 600 troops surrendered on 3 May, while many more remained in the Psunj mountain east and southeast of Pakrac. The surrender was accepted by Pakrac chief of police, Nikola Ivkanec.
As hundreds of RSK troops refused to surrender, remaining in the Psunj forests, Bobetko appointed Stipetić to conduct mop-up operations against those troops. The HV used artillery attacks to flush approximately 1,500 RSK troops towards its positions and captured them by the end of the day. Nonetheless, the HV and the Croatian special police continued to sweep the area for any remaining RSK military personnel. One such group of about 50 soldiers of the RSK 2nd Battalion of the 98th Infantry Brigade swam across the Sava River into the Republika Srpska on 7 May. The mop-up operations were completed by 20 May, when the last remaining RSK troops surrendered to the Croatian police on Psunj.
Operation Flash was a strategic victory for Croatia. It captured 558-square-kilometre (215 sq mi) area formerly held by the RSK, and placed the entire western Slavonia region under Croatian government control and secured the use of strategically important road and rail links between the capital and the east of the country. Croatian military losses in the offensive were 42 killed and 162 wounded. Croatia initially estimated that the RSK military sustained 350–450 killed and 1,000–1,200 wounded. The number of killed in action was later revised to 188. This figure included military and civilian deaths. On 3–4 May, the HV and the Croatian special police took approximately 2,100 prisoners of war. The prisoners of war, including arrested RSK officials, were transferred to detention facilities in Bjelovar, Požega and Varaždin for investigation of any involvement in war crimes. Some of the detainees were beaten or otherwise abused on the first evening of their detention, but treatment of the prisoners improved and was viewed as generally good. Three Jordanian soldiers serving with the UNCRO were wounded by HV fire.
Another consequence of Operation Flash was the displacement of the Serb population from the area—estimated at 13,000 to 14,000 prior to 1 May 1995. Two-thirds of that population fled the region during or immediately after the Croatian offensive. Furthermore, 2,000 were evacuated to Serb-held areas of Bosnia and Herzegovina on their own request within a month of Operation Flash. It was estimated that no more than 1,500 Serbs remained living in the area by the end of June. Serbian sources claim that 283 Serbs were killed and that between 15,000 and 30,000 were made refugees, while asserting that the population of the region was 15,000 prior to the offensive. Other Serbian and Russian sources claim the population size as high as 29,000. The Croatian Helsinki Committee reported a total of 83 civilians killed, including 30 who were killed near Novi Varoš where Serb civilians and the RSK military were intermingled as they fled south towards the Republika Srpska. A portion of the 30 killed in the retreating column were casualties of HV attacks, while others were killed by RSK troops to speed up the retreat.
The RSK defeat worsened political confrontation there and led politicians in Serbia and RSK to blame each other, and the HV's success brought about a great psychological boost for Croatia. Croatia established a commemorative medal to be issued to the HV troops who took part in the operation, and commemorates Operation Flash by annual official celebrations in Okučani, while Serbs mark the anniversary of the battle by church services for their dead.
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Štefančić 2011, p. 452 - Štefančić, Domagoj (December 2011). "Autocesta – okosnica rata u zapadnoj Slavoniji" [Motorway – axis of war in the Western Slavonia]. Journal – Institute of Croatian History (in Croatian). 43 (1). ISSN 0353-295X. Retrieved 27 January 2013. http://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=113509&lang=en
Brigović 2009, p. 48 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
ICTY & 22 January 2004, p. 31288 - "ICTY Trial of Slobodan Milošević – Transcript". International Criminal Tribunal for the former Yugoslavia. 22 January 2004. Retrieved 27 January 2013. http://www.icty.org/x/cases/slobodan_milosevic/trans/en/040122ED.htm
Balkan Battlegrounds 2002, p. 297 - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
Balkan Battlegrounds 2002, p. 276 - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
Balkan Battlegrounds 2002, p. 297 - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
Balkan Battlegrounds 2002, note 72/VII - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
Balkan Battlegrounds 2002, p. 297 - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
MORH 2010 - "Vojno redarstvena operacija "Bljesak"" [Military and police operation "Flash"] (in Croatian). Ministry of Defence (Croatia). 2010. Retrieved 2 February 2013. http://www.morh.hr/aktualne-teme/15.-obljetnica-operacije-bljesak-2010/vojno-redarstvena-operacija-bljesak.html
Brigović 2009, p. 47 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
Brigović 2009, p. 45 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
Brigović 2009, p. 63 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
Ramet 2006, p. 456 - Ramet, Sabrina P. (2006). The Three Yugoslavias: State-Building And Legitimation, 1918–2006. Indiana University Press. ISBN 978-0-253-34656-8. Retrieved 29 December 2012. https://books.google.com/books?id=FTw3lEqi2-oC
Brigović 2009, note 32 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
Brigović 2009, pp. 46–47 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
Brigović 2009, p. 65 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
Balkan Battlegrounds 2002, notes 73-75/VII - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
President of Croatia & 14 December 2012 - "Predsjednik Josipović odlikovao 15. križevačku protuoklopnu topničko-raketnu brigadu" [President Josipović decorates the 15th Antitank Artillery-Rocket Brigade Križevci] (in Croatian). Office of the President of Croatia. 14 December 2012. Retrieved 2 February 2013. http://www.predsjednik.hr/14122016
Brigović 2009, p. 51 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
Brigović 2009, p. 53 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
Ramet 2006, p. 456 - Ramet, Sabrina P. (2006). The Three Yugoslavias: State-Building And Legitimation, 1918–2006. Indiana University Press. ISBN 978-0-253-34656-8. Retrieved 29 December 2012. https://books.google.com/books?id=FTw3lEqi2-oC
Brigović 2009, note 49 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
Balkan Battlegrounds 2002, p. 297 - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
Balkan Battlegrounds 2002, note 81/VII - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
Sekulić 2000, p. 105 - Sekulić, Milisav (2000). Knin je pao u Beogradu [Knin was lost in Belgrade] (in Serbian). Nidda Verlag. OCLC 47749339. Retrieved 2 January 2013. https://books.google.com/books?id=W0L_GAAACAAJ
Balkan Battlegrounds 2002, p. 297 - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
Balkan Battlegrounds 2002, note 82/VIII - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
Sekulić 2000, pp. 105–106 - Sekulić, Milisav (2000). Knin je pao u Beogradu [Knin was lost in Belgrade] (in Serbian). Nidda Verlag. OCLC 47749339. Retrieved 2 January 2013. https://books.google.com/books?id=W0L_GAAACAAJ
Balkan Battlegrounds 2002, p. 297 - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
Brigović 2009, p. 50 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
Index.hr & 29 April 2005 - "U Novskoj obilježena 10. obljetnica "Bljeska"" [10th anniversary of "Flash" marked in Novska] (in Croatian). Index.hr. 29 April 2005. Retrieved 2 February 2013. http://www.index.hr/vijesti/clanak/u-novskoj-obiljezena-10-obljetnica-bljeska/262852.aspx
Brigović 2009, p. 52 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
Sekulić 2000, p. 106 - Sekulić, Milisav (2000). Knin je pao u Beogradu [Knin was lost in Belgrade] (in Serbian). Nidda Verlag. OCLC 47749339. Retrieved 2 January 2013. https://books.google.com/books?id=W0L_GAAACAAJ
Balkan Battlegrounds 2002, note 82/VIII - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
MORH 2010 - "Vojno redarstvena operacija "Bljesak"" [Military and police operation "Flash"] (in Croatian). Ministry of Defence (Croatia). 2010. Retrieved 2 February 2013. http://www.morh.hr/aktualne-teme/15.-obljetnica-operacije-bljesak-2010/vojno-redarstvena-operacija-bljesak.html
President of Croatia & 14 December 2012 - "Predsjednik Josipović odlikovao 15. križevačku protuoklopnu topničko-raketnu brigadu" [President Josipović decorates the 15th Antitank Artillery-Rocket Brigade Križevci] (in Croatian). Office of the President of Croatia. 14 December 2012. Retrieved 2 February 2013. http://www.predsjednik.hr/14122016
Balkan Battlegrounds 2002, p. 297 - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
Balkan Battlegrounds 2002, note 83/VII - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
Nacional & 24 April 2002 - Babić, Jasna (24 April 2002). "Janko Bobetko: 'Greške generala Džanka u akciji 'Bljesak' može potvrditi moj tadašnji pomoćnik general Stipetić'" [Janko Bobetko: Mistakes of General Džanko in Operation Flash may be corroborated by my aide at the time, General Stipetić]. Nacional (weekly) (in Croatian). Retrieved 2 February 2013. http://www.nacional.hr/clanak/10218/janko-bobetko-greske-generala-dzanka-u-akciji-bljesak-moze-potvrditi-moj-tadasnji-pomocnik-general-stipetic
Balkan Battlegrounds 2002, note 83/VII - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
Sekulić 2000, p. 106 - Sekulić, Milisav (2000). Knin je pao u Beogradu [Knin was lost in Belgrade] (in Serbian). Nidda Verlag. OCLC 47749339. Retrieved 2 January 2013. https://books.google.com/books?id=W0L_GAAACAAJ
Brigović 2009, p. 52 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
Sekulić 2000, p. 106 - Sekulić, Milisav (2000). Knin je pao u Beogradu [Knin was lost in Belgrade] (in Serbian). Nidda Verlag. OCLC 47749339. Retrieved 2 January 2013. https://books.google.com/books?id=W0L_GAAACAAJ
Brigović 2009, p. 53 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
Brigović 2009, p. 54 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
Brigović 2009, pp. 51–52 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
Brigović 2009, p. 53 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
Balkan Battlegrounds 2002, p. 297 - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
Brigović 2009, p. 53 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
Sekulić 2000, p. 110 - Sekulić, Milisav (2000). Knin je pao u Beogradu [Knin was lost in Belgrade] (in Serbian). Nidda Verlag. OCLC 47749339. Retrieved 2 January 2013. https://books.google.com/books?id=W0L_GAAACAAJ
Brigović 2009, pp. 57–58 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
San Francisco Chronicle & 3 May 1995 - "Serbs Attack Zagreb With Cluster Bombs". San Francisco Chronicle. 3 May 1995. Retrieved 2 February 2013. http://www.sfgate.com/news/article/Serbs-Attack-Zagreb-With-Cluster-Bombs-Step-3034539.php
Balkan Battlegrounds 2002, p. 298 - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
Jutarnji list & 2 May 2012 - "Centar Zagreba prije 17 godina raketiran u odmazdi za "Bljesak": Poginulo je šestero, a ranjeno 205 ljudi" [Downtown Zagreb rocket attack 17 years ago in retaliation for "Flash": Six killed, 205 wounded]. Jutarnji list (in Croatian). Retrieved 2 February 2013. http://www.jutarnji.hr/zagreb-prije-17-godina-napadnut-raketnim-sustavom--quot-orkan-quot-/1025435/
San Francisco Chronicle & 3 May 1995 - "Serbs Attack Zagreb With Cluster Bombs". San Francisco Chronicle. 3 May 1995. Retrieved 2 February 2013. http://www.sfgate.com/news/article/Serbs-Attack-Zagreb-With-Cluster-Bombs-Step-3034539.php
Brigović 2009, p. 60 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
Balkan Battlegrounds 2002, p. 298 - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
Slobodna Dalmacija & 18 September 2004 - Krstulović, Zvonimir (18 September 2004). "Heroj domovinskog rata" [Hero of the Croatian War of Independence]. Slobodna Dalmacija (in Croatian). Retrieved 3 February 2013. http://arhiv.slobodnadalmacija.hr/20040918/temedana01.asp
Balkan Battlegrounds 2002, p. 298 - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
Brigović 2009, note 54 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
Sekulić 2000, p. 106 - Sekulić, Milisav (2000). Knin je pao u Beogradu [Knin was lost in Belgrade] (in Serbian). Nidda Verlag. OCLC 47749339. Retrieved 2 January 2013. https://books.google.com/books?id=W0L_GAAACAAJ
Sekulić 2000, p. 80 - Sekulić, Milisav (2000). Knin je pao u Beogradu [Knin was lost in Belgrade] (in Serbian). Nidda Verlag. OCLC 47749339. Retrieved 2 January 2013. https://books.google.com/books?id=W0L_GAAACAAJ
Štefančić 2011, p. 436 - Štefančić, Domagoj (December 2011). "Autocesta – okosnica rata u zapadnoj Slavoniji" [Motorway – axis of war in the Western Slavonia]. Journal – Institute of Croatian History (in Croatian). 43 (1). ISSN 0353-295X. Retrieved 27 January 2013. http://hrcak.srce.hr/index.php?show=clanak&id_clanak_jezik=113509&lang=en
Brigović 2009, p. 64 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
HRW & July 1995, p. 2 - "The Croatian army offensive in western Slavonia and its aftermath" (PDF). Human Rights Watch. July 1995. Retrieved 3 February 2013. https://www.hrw.org/sites/default/files/reports/croatia957.pdf
Ramet 2006, p. 456 - Ramet, Sabrina P. (2006). The Three Yugoslavias: State-Building And Legitimation, 1918–2006. Indiana University Press. ISBN 978-0-253-34656-8. Retrieved 29 December 2012. https://books.google.com/books?id=FTw3lEqi2-oC
Balkan Battlegrounds 2002, p. 298 - Balkan Battlegrounds: A Military History of the Yugoslav Conflict, 1990–1995. Diane Publishing Company. 2003. ISBN 978-0-7567-2930-1. Retrieved 1 January 2013. https://books.google.com/books?id=0AoPAAAACAAJ
Brigović 2009, p. 61 - Brigović, Ivan (July 2009). "Osvrt na operaciju "Bljesak" u dokumentima Republike Srpske Krajine" [A review of Operation Flash in documents published by the Republic of Serbian Krajina]. Časopis Za Suvremenu Povijest (in Croatian). 41 (1). ISSN 0590-9597. Retrieved 25 January 2013. http://hrcak.srce.hr/48000?lang=en
HRW & July 1995, p. 2 - "The Croatian army offensive in western Slavonia and its aftermath" (PDF). Human Rights Watch. July 1995. Retrieved 3 February 2013. https://www.hrw.org/sites/default/files/reports/croatia957.pdf
HRW & July 1995, p. 6 - "The Croatian army offensive in western Slavonia and its aftermath" (PDF). Human Rights Watch. July 1995. Retrieved 3 February 2013. https://www.hrw.org/sites/default/files/reports/croatia957.pdf
Ramet 2006, p. 456 - Ramet, Sabrina P. (2006). The Three Yugoslavias: State-Building And Legitimation, 1918–2006. Indiana University Press. ISBN 978-0-253-34656-8. Retrieved 29 December 2012. https://books.google.com/books?id=FTw3lEqi2-oC
HRW & July 1995, p. 6 - "The Croatian army offensive in western Slavonia and its aftermath" (PDF). Human Rights Watch. July 1995. Retrieved 3 February 2013. https://www.hrw.org/sites/default/files/reports/croatia957.pdf
Ramet 2006, p. 456 - Ramet, Sabrina P. (2006). The Three Yugoslavias: State-Building And Legitimation, 1918–2006. Indiana University Press. ISBN 978-0-253-34656-8. Retrieved 29 December 2012. https://books.google.com/books?id=FTw3lEqi2-oC
Štrbac 2005, p. 225 - Štrbac, Savo (2005). Hronika prognanih Krajišnika [Chronicle of Expelled Krajišniks] (in Serbian). Zora. ISBN 978-86-83809-24-0. https://books.google.com/books?id=qY1pAAAAMAAJ
B92 & 1 May 2009 - "Anniversary of Croatia's "Flash" onslaught". B92. 1 May 2009. Archived from the original on 4 November 2012. Retrieved 3 February 2013. https://web.archive.org/web/20121104185138/http://www.b92.net/eng/news/crimes-article.php?yyyy=2009&mm=05&dd=01&nav_id=58861
Štrbac 2005, p. 225 - Štrbac, Savo (2005). Hronika prognanih Krajišnika [Chronicle of Expelled Krajišniks] (in Serbian). Zora. ISBN 978-86-83809-24-0. https://books.google.com/books?id=qY1pAAAAMAAJ
Sekulić 2000, p. 81 - Sekulić, Milisav (2000). Knin je pao u Beogradu [Knin was lost in Belgrade] (in Serbian). Nidda Verlag. OCLC 47749339. Retrieved 2 January 2013. https://books.google.com/books?id=W0L_GAAACAAJ
Guskova 2001, p. 493 - Guskova, Elena (2001). История югославского кризиса: 1990–2000 [The history of the Yugoslav crisis: 1990–2000] (in Russian). Russkoe pravo. ISBN 978-5941910038. https://books.google.com/books?as_isbn=5941910037
Nikiforov 2011, p. 795 - Nikiforov, Konstantin (2011). Югославия в XX веке: очерки политической истории [Yugoslavia in the 20th Century: Essays on Political History] (in Russian). Indrik. ISBN 9785916741216. https://books.google.com/books?as_isbn=9785916741216
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Index.hr & 24 July 2003 - "HHO iznio imena 83 srpska civila koje je navodno ubila HV tijekom "Bljeska"" [HHO publishes names of 83 Serb civilians allegedly killed by the HV in the "Flash"] (in Croatian). Index.hr. 24 July 2003. Retrieved 3 February 2013. http://www.index.hr/vijesti/clanak/hho-iznio-imena-83-srpska-civila-koje-je-navodno-ubila-hv-tijekom-bljeska/150324.aspx
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