G8 Summit attendees participate in a working dinner
President Barack Obama (1L), French President Francois Hollande (3L), British Prime Minister David Cameron (2L), Russian Prime minister Dmitry Medvedev (2R) and German Chancellor Angela Merkel attend a working dinner at the G8 summit in Camp David on May 18. US President Barack Obama said Saturday world powers were "hopeful" about talks with Iran next week on its nuclear program.