Ukrainian opposition leader Arseniy Yatsenyuk on Wednesday called for a millions-strong protest in Kiev after police moved on pro-EU demonstrators, predicting that the regime of President Viktor Yanukovych would fall. "We will not forgive this. Here there will be millions and his regime is going to collapse," Yatsenyuk, the leader of the party of jailed ex-premier Yulia Tymoshenko, told protesters on Independence Square in Kiev.