Sign up now for FREE unlimited access to Reuters.com Register WARSAW, March 26 (Reuters) – US President Joe Biden did not call for regime change in Russia when he said on Saturday that Russian President Vladimir Putin “could not stay in power”, a White House official said. “The president’s issue was that Putin was not allowed to exercise power over his neighbors or the region. He was not discussing Putin’s power over Russia or regime change,” he said after Biden’s speech in Warsaw. read more Sign up now for FREE unlimited access to Reuters.com Register Report by Jarrett Renshaw in Warsaw. Written by Jason Lange in Washington Montage by Nick Zieminski Our role models: The Thomson Reuters Trust Principles.