An aerial view shows the Maidan Nezalezhnosti or Independence Square crowded by supporters of EU integration during a rally in Kiev, December 1, 2013. Ukraine’s interior minister warned tens of thousands of protesters starting a pro-Europe rally in the capital Kiev on Sunday that police would respond if there were mass disturbances. REUTERS/Vasily Fedosenko (UKRAINE – Tags: POLITICS CIVIL UNREST) – RTX15ZK1