Russian President Dmitry Medvedev, left, and Prime Minister Vladimir Putin seen during their meeting in Moscow's Kremlin, Russia, Wednesday, Dec. 31, 2008. Russia's President Dmitry Medvedev signed a constitutional amendment Tuesday extending presidential terms in the country from four years to six, a change that many suspect is intended to benefit his predecessor - and possible successor - Prime Minister Vladimir Putin. (AP Photo/Mikhail Klimentyev, RIA Novosti Kremlin)