President Barack Obama talks with Turkish President Abdullah Gül
President Barack Obama greets Premier Wen Jiabao and members of the Chinese delegation
President Barack Obama celebrates the 20th anniversary of Air Force One with members of the crew
President Barack Obama knocks on the door before entering a soldier's room at Walter Reed Army Medical Center
President Barack Obama surprises Military Aide Major Barrett Bernard with a birthday cake aboard Air Force One
President Barack Obama and British Prime Minister David Cameron talk on the South Lawn of the White House
President Barack Obama celebrates the 20th anniversary of Air Force One with members of the crew
President Barack Obama knocks on the door before entering a soldier's room at Walter Reed Army Medical Center
President Barack Obama surprises Military Aide Major Barrett Bernard with a birthday cake aboard Air Force One
President Barack Obama and British Prime Minister David Cameron talk on the South Lawn of the White House
President Barack Obama greets crew members from the Space Shuttle Atlantis and the International Space Station
President Barack Obama and Russian President Dmitry Medvedev have lunch
President Barack Obama and Russian President Dmitry Medvedev
President Barack Obama talks with Ethiopian Prime Minister Meles Zenawi, right, and Malawian President Bingu wa Mutharika, left
President Barack Obama talks with Canadian Prime Minister Stephen Harper
President Barack Obama greets South Korean President Lee Myung-Bak
President Barack Obama and British Prime Minister David Cameron prepare to board Marine One
