Russian President Vladimir Putin, in his state of the union speech on Thursday, defended the Kremlin's aggressive foreign policy, saying the actions are necessary for his country's survival. Pavel Golovkin/AP hide caption

itoggle caption Pavel Golovkin/AP

At least 5,000 Russians marched on a frosty Sunday afternoon in Moscow to protest plans to lay off thousands of doctors and close hospitals against the backdrop of a flagging economy. Alexander Zemlianichenko/AP hide caption

itoggle caption Alexander Zemlianichenko/AP

President Vladimir Putin lays flowers during a ceremony marking Victory Day in the Crimean city of Sevastopol on Friday. It was his first visit to the region since Russia annexed it in March. Maxim Shemetov/Reuters/Landov hide caption

itoggle caption Maxim Shemetov/Reuters/Landov

President Obama and Russian President Vladimir Putin meet in Enniskillen, Northern Ireland, on June 17. Obama has strongly condemned Russian intervention in Ukraine but has not yet announced a concrete response. Evan Vucci/AP hide caption

itoggle caption Evan Vucci/AP

Russian tycoon Boris Berezovsky talks to the media on Aug. 31, 2012, after losing his case against Russian oligarch Roman Abramovich in London. Berezovsky was found Saturday dead at his home in Britain. Sang Tan/AP hide caption

itoggle caption Sang Tan/AP