#1Barack Obama Age:50 NEW YORK, NY - SEPTEMBER 20: U.S. President Barack Obama attends a bilateral meeting with Turkish Prime Minister Recep Tayyip Erdogan during the United Nations General Assembly September 20, 2011 in New York City. The 66th session of United Nations General Assembly kicks off September 21, with leaders from around the world attending. #2Vladimir Putin Age:59 Russian Prime Minister Vladimir Putin seen during a meeting with officials in Moscow, Wednesday, Oct. 5, 2011.