A man burns a flare as protesters try to break through police lines near the presidential administration building during a rally held by supporters of EU integration in Kiev, December 1, 2013. Ukrainian opposition leader Vitaly Klitschko, addressing hundreds of thousands of protesters in central Kiev, called on President Viktor Yanukovich and his government to resign, saying they had "stolen" Ukraine's dream of European integration. REUTERS/Stoyan Nenov (UKRAINE - Tags: POLITICS CIVIL UNREST)