The two countries are Canada and the United States since Alaska is in the Arctic Ocean
Cuba was a closely Soviet controlled communist country close to the United States Fun fact a soviet nuclear submarine incorrectly received orders and thought that war had begun between the US and the Soviet Union the two senior officers both have the go ahead to launch but the junior officer Vasili Alexandrovich Arkhipov did not give the go ahead pretty much preventing all out nuclear war
Thousands indefinitely but not many
