Putin sworn in as riot police clash with protesters
Russia Putin
Russian former President Dmitry Medvedev walks upstairs as he arrives to attend President Vladimir Putin's inauguration ceremony at the Cathedral Square in the Kremlin in Moscow, Russia, Monday, May 7, 2012. Vladimir Putin took the oath of office for a third term as Russia's president on Monday, saying he considers "service to the fatherland and our nation to be the meaning of my life." (AP Photo/Alexander Zemlianichenko, pool)