World Leaders Arrive at G20 (20 images)

U.S. President Barack Obama (2L) and U.S. first lady Michelle Obama (R) welcome Australian Prime Minister Kevin Rudd (L) and his wife Therese Rein to the opening dinner for G-20 leaders at the Phipps Conservatory as U.S. first lady Michelle Obama (R) escorts Miyuki Hatayama (2nd R) 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

U.S. President Barack Obama (R) greets British Prime Minister Gordon Brown at 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

U.S. President Barack Obama (R) talks with Russian President Dmitry Medvedev while greeting him at 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

Chinese President Hu Jintao (R) reaches out to shake hands with U.S. President Barack Obama (2nd R) during a group photo on the second day of the G-20 summit in Pittsburgh, Pennsylvania on September 25, 2009. G-20 leaders are working on an accord to prevent a repeat of the worst global financial crisis since the Great Depression and ensure a sustained recovery. UPI/Anatoli Zhdanov