WASHINGTON — The Biden administration on Friday escalated dire warnings of a possibly imminent Russian invasion of Ukraine, saying it could happen at any moment, even as emergency diplomatic efforts continued. Adding to the sense of crisis, the Pentagon ordered an additional 3,000 U.S. troops to Poland to reassure allies.
As diplomatic options for averting war in Ukraine appeared to narrow, the White House said President Joe Biden and Russian President Vladimir Putin would discuss the crisis by phone on Saturday.
