(Alexander Zemlianichenko | AP Photo) In this Monday, Jan. 29, 2018 file photo, U.S. Ambassador to Russia Jon Huntsman Jr. attends an opening ceremony of the stone of the memorial to members of the resistance at Nazis concentration camps during WWII, at the Jewish Museum and Center for Tolerance in Moscow, Russia. The U.S. and British embassies in Moscow said Wednesday July 17, 2019, that Russia has refused visas to teachers at a school that educates diplomats' children.