Avalanche Express
"The Fast Track For All-Star Adventure."
CIA agent Harry Wargrave is sent to aid Gen. Marenkov, a senior Russian official, who is defecting to the west. Wargrave decides they should travel to safety on a train across Europe, the "Atlantic Express". During the journey, they must survive attacks by terrorists and an avalanche, all planned by Russian spy-catcher Nikolai Bunin.
Directors: Mark Robson, Monte Hellman
Writers: Abraham Polonsky, Colin Forbes
Cast
IMDB: tt0078812