From left: Leader of the Third Ukrainian Republic movement Yuri Lutsenko, leader of the Udar party Vitali Klitschko, leader of the Batkivschina faction of the Verkhovna Rada of Ukraine Arseny Yatsenyuk and leader of the Ukrainian extreme right party Freedom Oleg Tyagnibok during a rally in support of Ukraine's European integration at Mikhaylovskaya Square in Kiev.