World Leaders Gather For G20 Summit In Pittsburgh

U.S. President Barack Obama (R) welcomes Brazilian President Luiz Inacio Lula da Silva 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 the David L. Lawrence Convention Center aimed at promoting economic growth. UPI/Win McNamee/Pool