The Federal Republic of Yugoslavia officially changes its name to the State Union of Serbia and Montenegro on February 4, 2003, replacing the federal government with a loose union marking the the end of the "Yugoslavia" name, which had been in use since 1929.
The union lasted until June 3, 2006, when Montenegro declared its own independence following a referendum. Serbia's National Assembly formally declared its own independence, on June 5, 2006 as the legal successor state to the Union of Serbia and Montenegro. Formally spliting into two countries.
