David Wurmser served as special assistant at the State Department to a diplomat that was appointed  U.S. ambassador to the United Nations by what president?
John R. Bolton John Robert Bolton (born November 20, 1948) is an American lawyer and diplomat who has served in several Republican administrations. Bolton served as the U.S. ambassador to the United Nations from August 2005 until December 2006 as a recess appointee by President George W. Bush. He resigned in December 2006, when the recess appointment would have otherwise ended, because he was unlikely to win confirmation from the Senate in which a newly elected Democratic Party majority would be taking control in January 2007.
United States Ambassador to Zimbabwe The first United States Ambassador to Zimbabwe was appointed on May 23, 1980, after the Republic of Zimbabwe came into being to replace the previous white-minority government of Rhodesia, and its successor Zimbabwe-Rhodesia (1979–1980).