World Leaders Gather For G20 Summit In Pittsburgh

PITTSBURGH - SEPTEMBER 25: Chinese President Hu Jintao (L) speaks with U.S. President Barack Obama at the plenary session of the G-20 summit on September 25, 2009 in Pittsburgh, Pennsylvania. Heads of state from the world's leading economic powers are meeting for the second day of the G-20 summit held at the David L. Lawrence Convention Center, aimed at promoting economic growth. (Photo by John Moore/Getty Images)