KIEV, UKRAINE - WBA/IBO/WBO/IBF heavyweight champion Wladimir Klitschko, along with German Foreign Minister Guido Westerwelle, have joined WBC champion Vitali Klitschko, the leader of Ukraine's UDAR opposition party, at Maidan square - where thousands of demonstrators have been protesting against the government since a decision by Ukrainian president Viktor Yanukovych to suspend a trade and partnership agreement with the European Union in favor of incentives from Russia. Westerwelle is on a two-day trip in Kiev, for bilateral meetings and to attend the OECD Foreign Minister Meeting.