Russia's Vladimir Putin took the oath of office Monday to become president for a historic third term.
Putin Takes Russian Presidency for Historic 3rd Term
Vladimir Putin enters St. Andrew's Hall to take the oath of office during his inauguration as Russia's president in the Grand Kremlin Palace in Moscow, May 7, 2012. (AP)
Russian President Vladimir Putin, left, and former President Dmitry Medvedev shakes hands at the inauguration ceremony. (AP)
Russian President Vladimir Putin, left back, and former President Dmitry Medvedev watch a parade of the Kremlin's honor guards in Cathedral Square after the inauguration ceremony. (AP)
Russian President Vladimir Putin and his wife Lyudmila walk in Cathedral Square after his inauguration. (AP)
Russian President Vladimir Putin, left, and his wife Lyudmila attend a service in the Annunciation Cathedral after his inauguration. (AP)
Riot police chase opposition supporters during an unsanctioned protest in Moscow, May 7, 2012. (Reuters)
Members from Russia's Interior Ministry detain an opposition supporter during an unsanctioned protest. (Reuters)
Police detain a protester in downtown Moscow shortly after Vladimir Putin's inauguration. (AP)