World Leaders Gather For G20 Summit In Pittsburgh

U.S. President Barack Obama (2L) greets Japanese Prime Minister Yukio Hatoyama (L) while welcoming him to the opening dinner for G-20 leaders as U.S. first lady Michelle Obama (R) escorts Japanese first lady Miyuki Hatayama at the Phipps Conservatory on September 24, 2009 in Pittsburgh, Pennsylvania. Heads of state from the world's leading economic powers arrived today for the two-day G-20 summit held at the David L. Lawrence Convention Center aimed at promoting economic growth. UPI/Win McNamee/Pool