Rocky IV

Rocky IV takes place in 1985, toward the end of the Cold War between the USA and USSR. Rocky Balboa is the current boxing heavy-weight title holder and close friend to his former rival, Apollo Creed. However the Soviet Union (USSR) has claimed they have created "The most perfectly trained athlete in the world." His name was Ivan Drago, and when American reporters claimed the Soviet officials spoke of him like he was indestructible, the official responded "Yes, he is." This led to Apollo Creed wanting to fight Drago in an exhibition match instead of Rocky fighting Drago (despite Creed himself being retired and not in shape for a fight with Drago). It was this match that led to the explosive fight between Rocky and Drago in Moscow, Drago has been referred to as Rocky's greatest opponent.
https://www.imdb.com/title/tt0089927/
https://en.wikipedia.org/wiki/Rocky_IV
https://letterboxd.com/film/rocky-iv/