The Bulgarian elections of June 1990 and October 1991 brought a new government into power that favored closer relations with NATO, the EU, and the United States. Bulgarian President Zhelyu Zhelev visited the United States and had talks with U.S. President George H. W. Bush in 1990, followed by the official visit to Sofia by U.S. Vice-President Dan Quayle. In 1999, President Bill Clinton became the first sitting U.S. President to visit Bulgaria, speaking to a huge crowd in Nevsky Square. To show their commitment to closer relations with the United States and earnest desire to become a member of NATO and the European Union, Bulgaria contributed a contingent of troops to the US led NATO peace keeping force in Bosnia-Herzegovina, beginning in 1996 and throughout that mission, which ended in 2004, followed by continued participation in the European Union Force (EUFOR) ready reaction force stationed at the former NATO Camp Butmir, in Sarajevo, Bosnia-Herzegovina.