President Obama Visits Russia

President Barack Obama, right, his daughters Malia, second right, and Sasha and his wife Michelle Obama are seen on their arrival at Moscow's Vnukovo airport, Monday, July 6, 2009.

President Barack Obama on his arrival at Moscow's Vnukovo airport, Russia, Monday, July 6, 2009.

President Barack Obama and first lady Michelle Obama are accompanied by Russian honor guard members as they lay a wreath at the Russian Tomb of the Unknown Soldier in Moscow, Monday, July 6, 2009.

President Barack Obama arrives, accompanied by Russian honor guard, to lay a wreath at the Tomb of the Unknown Monday, July 6, 2009, in Moscow.

President Barack Obama, seen at right, takes part at a wreath laying ceremony at the Tomb of Unknown Soldier in Moscow, Russia, Monday, July 6, 2009.

President Barack Obama lays a wreath at the Russian Tomb of the Unknown Soldier in Moscow, Monday, July 6, 2009.

Russia's President Dmitry Medvedev, left, welcomes President Barack Obama, right, on his arrival in the Moscow Kremlin, Russia, Monday, July 6, 2009.

President Barack Obama meets with Russia's President Dmitry Medvedev at the Kremlin in Moscow, Monday, July 6, 2009.

Russian President Dmitry Medvedev, right, and President Barack Obama meeting in the Moscow Kremlin, Russia, Monday, July 6, 2009.

President Barack Obama introduces Russian President Dmitry Medvedev, center, to members of the American delegation at the Kremlin Monday, July 6, 2009, in Moscow.

Obama in Russia — AP Photo/Misha Japaridze

President Barack Obama, left, and Russian President Dmitry Medvedev exchange documents before a joint press conference at the Kremlin Palace in Moscow, Monday, July 6, 2009.

President Barack Obama, left, and Russian President Dmitry Medvedev attend a joint press conference at the Kremlin Palace in Moscow, Monday, July 6, 2009.

Russian President Dmitry Medvedev's wife Svetlana Medvedeva, left, and first lady Michelle Obama, center, are seen in the Assumption Cathedral as they tour the Kremlin museums in Moscow, Monday, July 6, 2009.

President Barack Obama speaks during a press conference following the signing of the Joint Understanding for the START Follow-on Treaty, Monday, July 6, 2009, at the Kremlin in Moscow.

President Barack Obama, left, shakes hands with Russian Prime Minister Vladimir Putin during a meeting at Novo Ogaryovo, Tuesday, July 7, 2009, in Moscow.

President Barack Obama, left, seen with Russian Prime Minister Vladimir Putin at Novo Ogaryovo, Tuesday, July 7, 2009, in Moscow. Mr. Obama met with Prime Minister Vladimir Putin for the first time Tuesday, called their talks "an excellent opportunity to put U.S.-Russian relations on a strong footing."

President Barack Obama, left, meets with Russian President Dmitry Medvedev Tuesday, July 7, 2009, in Moscow.

President Barack Obama, left, and Russian President Dmitry Medvedev walk toward the Tsar Cannon built in 1586 Tuesday, July 7, 2009, in Moscow.

President Barack Obama, center right, and first lady Michelle Obama, center left, greet graduates and audience members after giving a speech at the National Economic School graduation in Moscow, Tuesday, July 7, 2009.