Eric Bana and Emilia Clarke were in negotiations to star.
The Vukovar massacre, also known as the Vukovar hospital massacre or the Ovcara massacre, was the killing of Croatian prisoners of war and civilians by Serb paramilitaries, to whom they had been turned over by the Yugoslav People's Army (JNA), at the Ovcara farm southeast of Vukovar on 20 November 1991, during the Croatian War of Independence.
Croatian city of Vukovar was defended by around 1,800 lightly armed soldiers of the Croatian National Guard (ZNG) and civilian volunteers, against as many as 36,000 JNA (Yugoslav People's Army) soldiers and Serb paramilitaries equipped with heavy artillery.
Croatian city of Vukovar sustained significant damage due to the JNA's (Yugoslav People's Army) and Serb paramilitaries artillery and rocket barrages. By the end of the battle, over 700,000 shells and other missiles had been fired at the city, at a rate of up to 12,000 per day.
A report by Human Rights Watch (then called Helsinki Watch) from 1986 described Yugoslavia as one of the most repressive communist countries in Europe.