After a mortar attack caused heavy loss of life at a marketplace in Sarajevo, UN peacekeepers requested NATO airstrikes, which began on 30 August against Bosnian Serb air defences (Operation DEADEYE). When a bombing pause failed to result in Bosnian Serb compliance with the UN’s demands to withdraw, Operation DELIBERATE FORCE targeted Bosnian Serb command & control installations and ammunition facilities. These airstrikes were a key factor in bringing the Serbs to the negotiating table and ending the war in Bosnia.