“We continue to lower the level of our diplomatic presence in Kiev, and our president has very bluntly conveyed to President Putin that we are concerned about the safety and well-being of the Americans remaining in Ukraine,” RIA Novosti quoted a senior US administration official as saying.

Earlier it was reported that Biden discussed by phone with Putin the escalation of tension on the border of Russia and Ukraine.

Russian Foreign Minister Sergei Lavrov noted that speculations about the capture of Kiev by Russia or operations to plant a "puppet regime" in the Ukrainian capital are from the high-like series.