Background: Serbia and Montenegro have asserted the formation of a joint independent state, but this entity has not been formally recognized as a state by the US. The US view is that the Socialist Federal Republic of Yugoslavia (SFRY) has dissolved and that none of the successor republics represents its continuation. In 1999, massive expulsions by Serbs of ethnic Albanians living in the autonomous republic of Kosovo provoked an international response, including the bombing of Serbia and the stationing of NATO and Russian peacekeepers in Kosovo.