Washington, March 27 - Croatian Prime Minister Ivo Sanader arrived in the United States on Sunday. On Monday, March 29, he will attend an event in Washington DC marking the admission of Bulgaria, Estonia, Latvia, Lithuania, Romania, Slovakia and Slovenia to NATO. The prime ministers of the seven countries, as well as those of Croatia, Albania and Macedonia, which aspire to join the Alliance, are expected to meet U.S. President George W. Bush, Secretary of State Colin Powell. Prime Minister Sanader will be accompanied by Croatian Minister of Foreign Affairs Dr. Miomir Zuzul.