Helen Clark
Helen Clark is the head of the United Nations Development Programme, the third-highest UN position. Clark was the 37th Prime Minister of New Zealand for three consecutive terms from 1999 to 2008. Before resigning from Parliament in April 2009, Clark was Labour's foreign affairs spokeswoman and MP for the Mount Albert electorate which she had held since 1981. Forbes magazine ranked her 20th most powerful woman in the world in 2006.