Photostream : Russian President Dmitry Medvedev in Lisbon to attend NATO-Russia Council session

Russia's President Dmitry Medvedev (R) arrives at Lisbon airport on November 20, 2010 for a NATO (North Atlantic Treaty Organization) Summit of Heads of States and Government held on 19-20 November 2010 in Portugal's capital. (Photo by ANDRE KOSTERS/AFP/Getty Images)

NATO Secretary General Anders Fogh Rasmussen (R) and Russia's President Dmitry Medvedev arrive for a NATO Russia Council meeting at the NATO summit in Lisbon November 20, 2010. NATO will invite Russia to take part in a U.S.-European missile defense shield at a summit on Saturday, a move that would herald the closest cooperation between the powers since the end of the Cold War. (Getty Images / REUTERS / Vladimir Radionov/RIA Novosti/Kremlin)

NATO Secretary General Anders Fogh Rasmussen (L), Portugal's Prime Minister Jose Socrates (R) and Russia's President Dmitry Medvedev arrive for the NATO Russia Council Meeting during the second day of the NATO Summit in Lisbon November 20, 2010. NATO will invite Russia to take part in a U.S.-European missile defense shield at a summit on Saturday, a move that would herald the closest cooperation between the powers since the end of the Cold War. (Getty Images / REUTERS / Vladimir Radionov/RIA Novosti/Kremlin )

NATO Secretary General Anders Fogh Rasmussen, left, and Russian President Dmitry Medvedev are seen prior to participating in a NATO Russia Council meeting at a NATO summit in Lisbon on Saturday Nov. 20, 2010. NATO planned Saturday to deliver a historic invitation for Russia to join a missile shield protecting Europe against Iranian attack, a milestone for an alliance that was built to defend against Soviet forces. (Getty Images / AP Photo/RIA Novosti, Vladimir Rodionov, Presidential Press Service)

(From L) Russia's President Dmitry Medvedev, France's President Nicolas Sarkozy, France's Minister of Defence and Veterans Alain Juppe and France's Minister of Foreign Affairs Michele Alliot-Marie pose to prior the NRC (NATO-Russian Council) on November 20, 2010 in Lisbon, as part of a NATO (North Atlantic Treaty Organization) Summit of Heads of States and Government held on 19-20 November 2010. (AFP PHOTO/ POOL/ DOMINIQUE FAGET (Photo by DOMINIQUE FAGET/AFP/Getty Images)

Russian President Dmitry Medvedev, right, and Italian Prime Minister Silvio Berlusconi are seen before the start of the NATO Russia Council Meeting Working Session at the NATO Summit in Lisbon, Portugal, Saturday, Nov. 20, 2010. (Getty Images / AP Photo/RIA Novosti, Vladimir Rodionov, Presidential Press Service)