Ezekiel 38 speaks of Gog king of Magog, not Russia by name. You may want to speculate that that must mean Russia, and you may be right or wrong, but you must keep the distinction between text and interpretation firmly in mind. With the present administration, I wouldn’t be surprised if Gog king of Magog is really Barry, or it could also be DAESH (ISIS to some), or both, or all three, or Persia (Iran to some).
Do some research. Magog, historically, has always been known as the land to the extreme north of Israel. Draw a line directly north and you end up in Moscow. Even Jewish historians called the Scythians the land of Magog. This prophecy has yet to be fulfilled, but it could be very soon.