This film could have been named Play Dirty too. Inspite of the seemingly pro-American bias any child can tell that this espionage game is manipulative - you forego human bonds and values for abstract ballyhoo like "love for the country".
It's propaganda all right but filmed with class by André de Toth. We even have the right to see Russian people having fun in the streets of Moscow. Ernest Borgnine is perfect in the role of Boris Metrov. Recommended to curious ones.