A man holds a Soviet Union flag during a pro-Russia rally in Simferopol, Crimea's Lenin Square Sunday. In Kiev, Ukrainian Prime Minister Arseniy Yatsenyuk vows not to give "an inch" of territory to Russia. Filippo Monteforte/AFP/Getty Images hide caption

itoggle caption Filippo Monteforte/AFP/Getty Images

Ukrainian President Viktor Yanukovych (right) and opposition leader Vitali Klitschko shake hands Friday after signing an agreement that diplomats hope will end the bloodshed in Kiev. Tim Brakemeier/EPA/Landov hide caption

itoggle caption Tim Brakemeier/EPA/Landov

An injured man is carried away Thursday after more clashes between anti-government protesters and police in Kiev. Yannis Behrakis /Reuters/Landov hide caption

itoggle caption Yannis Behrakis /Reuters/Landov