1999: Serbia: Operation Allied Force: U.S. and NATO aircraft began a major bombing of Serbia and Serb positions in Kosovo on March 24, 1999, during the Kosovo War due to the refusal by Serbian President Slobodan Milošević to end repression against ethnic Albanians in Kosovo. This operation ended on June 10, 1999, when Milošević agreed to pull his troops out of Kosovo. In response to the situation in Kosovo, NATO dispatched the KFOR peacekeepers to secure the peace under UNSC Resolution 1244.[RL30172]