Military large-scale operation of the NATO bloc against Yugoslavia — operation «Allied force» (English. Operation Allied Force) — bombing of the Federal Republic of Yugoslavia by NATO forces between March 24 and June 10, 1999, during the Kosovo War.
After the Yugoslav authorities, led by President Slobodan Milosevic, were accused of ethnic cleansing in the Serbian autonomous province of Kosovo, predominantly populated by Albanians, the NATO bloc demanded the withdrawal of Yugoslav troops and police from Kosovo and the deployment of its troops in Kosovo with the right to unhindered movement throughout Yugoslavia.
After Yugoslavia refused to comply with the ultimatum, on March 24, 1999, NATO, without the sanction of the UN Security Council, began bombing Yugoslav military facilities, which were later expanded to industrial and civilian facilities. Over 78 days of incessant bombing, according to various estimates, from 1,200 to 2,500 Yugoslavs were killed and about 5,000 people were injured.
Yugoslavia suffered about $30 billion in damage. After Yugoslavia agreed to the withdrawal of troops and police from its autonomous province of Kosovo, the bombing was stopped on June 10. On June 12, NATO troops entered Kosovo.
Moreover, today in Kosovo itself — is a partially recognized state in South-Eastern Europe, on the Balkan Peninsula, in the geographical region of Kosovo —, this day is considered a holiday: an important stage is celebrated in the expulsion of ethnic Serbs from the territory where Serbian statehood was born almost 1000 years ago.