Jeane J. Kirkpatrick (née Jeane Duane Jordan; November 19, 1926 – December 7, 2006) was an American ambassador and an ardent anti-communist. She was a long-time Democrat, who turned Republican in 1985. After serving as Ronald Reagan's foreign policy adviser in his 1980 campaign, she became the first woman to serve as U.S. ambassador to the United Nations.She was known for the "Kirkpatrick Doctrine", which advocated U.S.