Ukraine remains tense while pro-Putin supporters demonstrate in Moscow
A woman passes by a graffiti that reads "The Russians are coming - Resistance" in Simferopol, Ukraine, Friday, March 7, 2014.Vadim Ghirda/The Associated Press
A uniformed man, believed to be a Russian serviceman, stands guard near a Ukrainian military base outside the city of Sevastopol, March 7, 2014.DAVID MDZINARISHVILI/Reuters
A uniformed man, believed to be a Russian serviceman, stands guard near a Ukrainian military base outside the city of Sevastopol, March 7, 2014.DAVID MDZINARISHVILI/Reuters
A woman passes by a WWII memorial, the actual Russian tank that was first to enter Simferopol in 1944 as the Red Army was advancing, in Simferopol, Ukraine, Friday, March 7, 2014.Vadim Ghirda/The Associated Press
A uniformed man, believed to be a Russian serviceman, stands guard near a Ukrainian military base outside the city of Sevastopol, March 7, 2014.DAVID MDZINARISHVILI/Reuters
Russian Navy ships block the entrance to the Crimean port of Sevastopol, March 7, 2014.DAVID MDZINARISHVILI/Reuters
People hold a rally in the Russian southern city of Stavropol, in support of the people of Crimea, March 7, 2014.EDUARD KORNIYENKO/Reuters
Attack helicopters, believed to be Russian, fly over a Russian military base in Sevastopol, March 7, 2014.DAVID MDZINARISHVILI/Reuters
A Pro-Putin demonstrators holds posters reading "We Believe Putin!" as others gather towards to Red Square in Moscow, Russia, Friday, March 7, 2014, with Spassky Tower, left, and St. Basile Cathedral, right, are in the background.Alexander Zemlianichenko/The Associated Press
Pro-Putin demonstrators hold posters reading "Putin is our president!", "Putin, we are with you!" and "We don't let our people down" as they gather towards to Red Square in Moscow, Russia, Friday, March 7, 2014.Alexander Zemlianichenko/The Associated Press
Pro-Putin demonstrators wave Russian national flags as they gather towards to Red Square in Moscow, Russia, Friday, March 7, 2014, with Spassky Tower, left, and St. Basile Cathedral, right, are in the background.Alexander Zemlianichenko/The Associated Press