The White House has imposed a sanctions package on Russian officials and expelled several Russian diplomats; the Kremlin has responded with the expulsion of American diplomats and severely restricted whom the U.S. Embassy in Moscow can hire. Biden also recently agreed that Putin was a “killer”; Putin responded by ominously wishing Biden “good health.” https://www.politico.com/news/2021/05/05/biden-putin-summit-location-485457