Live updates: Ukraine-Russia border tensions

From CNN's Kevin Liptak and Matthew ChanceRussian President Vladimir Putin will hold a telephone conversation with US President Biden on Saturday at 7 p.m. Moscow time (11 a.m. ET), Kremlin spokesperson Dmitry Peskov told CNN on Friday.According to Peskov, a telephone conversation between Putin and French President Emmanuel Macron is also planned on Saturday.A person familiar with the matter told CNN earlier that Biden and Putin would speak tomorrow.At a White House press briefing today, national security adviser Jake Sullivan said the two men would speak by phone, but didn't say when.Biden last spoke to Putin at the end of December. From CNN's Kylie AtwoodThe State Department is calling Americans in Ukraine to find out if they have plans to leave as the US continues to urge Americans to depart the country. For the time being, the nonessential staff has been given the opportunity to telework from outside the country."Earlier: The UK government advised nationals in Ukraine to leave now while commercial means are still available, according to the UK Foreign, Commonwealth and Development Office.From CNN's Oren Liebermann and Barbara StarrDefense Secretary Lloyd Austin ordered 3,000 more soldiers from the 82nd Airborne to deploy to Poland amid rising concern about Russia’s potential invasion of Ukraine, according to a senior defense official. Although Sullivan said an invasion could begin at “any time,” even during the Olympics, he added that the United States does not believe Russian President Vladimir Putin has made a decision on whether to invade.