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

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An injured man who was on a subway train that derailed Tuesday in Moscow talks on his phone after being treated by paramedics. Dmitry Serebryakov/AFP/Getty Images hide caption

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Senior high school students wearing Soviet-era navy uniform march during a daily ceremony of changing the guard of honor at the WW II Memorial to the Heroes of the defense of Sevastopol 1941-1942 in Sevastopol, Crimea, Saturday. Russia says it doesn't plant to invade mainland Ukraine. Olga Maltseva/AFP/Getty Images hide caption

itoggle caption Olga Maltseva/AFP/Getty Images

A protester wearing a costume bearing the words Robocop walks among Russian riot police officers after a rally in Moscow on Saturday. Ivan Sekretarev/AP hide caption

itoggle caption Ivan Sekretarev/AP