"A White House official later walked back Mr. Biden’s comment. “The
president’s point was that Putin cannot be allowed to exercise power over
his neighbors or the region,” the official said. “He was not discussing
Putin’s power in Russia, or regime change.”" https://www.wsj.com/articles/biden-and-polands-leader-look-to-boost-support-
for-ukraine-11648304117?mod=e2tw