Romanoff and Juliet (1961)

A tiny, otherwise, inconsequential and powerless European country called Concordia holds the deciding vote in a crucial United Nations resolution. As the U.S. and Soviet Union try to manipulate Condordia so that its vote aligns with their interests, Concordia's wily leader turns the tables on the superpowers, pitting one against the other by playing matchmaker between the son of the Soviet Ambassador and the daughter of his U.S. counterpart.