The Federal Republic of Yugoslavia, known as FR Yugoslavia or simply Yugoslavia, was a country in the Balkans that existed from 1992 to 2003, following the breakup of the SFR Yugoslavia. The Federal Republic of Yugoslavia comprised the Republic of Serbia and the Republic of Montenegro. In February 2003, FR Yugoslavia was transformed from a federal republic to a political union officially known as the State Union of Serbia and Montenegro. In 2006, Montenegro seceded from the union, leading to the full independence of Serbia and Montenegro.
Its aspirations to be the sole legal successor state to SFR Yugoslavia were not recognized by the United Nations, following the passing of United Nations Security Council Resolution 777, which affirmed that the Socialist Federal Republic of Yugoslavia had ceased to exist, and the Federal Republic of Yugoslavia was a new state. All former republics were entitled to state succession while none of them continued SFR Yugoslavia's international legal personality. However, the government of Slobodan Milošević opposed any such claims, and as such, FR Yugoslavia was not allowed to join the United Nations.