The decision to bomb was made at the NATO summit in Washington D.C. on April 23, 1999, after the FRY refused to sign a peace agreement that would have given substantial autonomy to Kosovo.
The bombing campaign, known as Operation Allied Force lasted 78 days and ended with the Kumanovo Treaty, which was signed on June 10, 1999.
The bombing campaign resulted in the loss of hundreds of lives, including both military and civilian casualties, and significant damage to infrastructure in the FRY.
It also led to the displacement of hundreds of thousands of people from Kosovo, many of whom were ethnic Albanians fleeing the Serbian forces.
The intervention was controversial and divided public opinion in the West, with some arguing that it was necessary to stop the humanitarian catastrophe in Kosovo, while others condemned it as an act of aggression against a sovereign state.