World Leaders Arrive at G20(20 images)

U.S. President Barack Obama (R) and First Lady Michelle Obama arrive to the welcoming dinner for G-20 leaders 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 David L. Lawrence Convention Center, aimed at promoting economic growth. UPI/Win McNamee/Pool | License Photo
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