The Avengers Vol. 1 (1963-1996) #319

Plot

Off the coast of Ireland, the Royal Navy submarine, Waterwind, is hijacked by a group of Russian terrorists! And to make matters worse the Waterwind carries a nuclear payload! Suddenly Great Britain and the rest of the free world have an international crisis on their hands! When 10 Downing Street turns to the White House for help, the president turns to the Mighty Avengers! Cap and his quartet pick up Stingray en route to the Atlantic and then dive into the depths of the ocean to find the missing sub! But another country, the Soviet Union, has also sent a group of super-heroes to find the submarine! The People's Protectorate! Fortunately, the Cold War is almost over. However no one's told that to the Crimson Dynamo, Red Guardian, Fantasma, Perun, and Vostok! And in the cold waters of the North Atlantic, the American super-team battles the Russian one for underwater supremacy! (mycomicshop.com)