I don't what DDR is so I googled it and the first result was East Germany (Deutsche Demokratische Republik)- let's go with that. It's the 70s and the world is on the brink of nuclear war. The USA, USSR and allies decide whether capitalism or communism will triumph based on a game of American football in Berlin.
The Americans win in the end. Of course they do- the sport has the name 'American' in it- no other countries even know the rules. The communists really should have insisted on a boxing or weightlifting tournament...