“The Unbreakable Alliance” is the tenth part of the cycle “The Sea Wolf,” continuing the story of an atomic submarine “Voronezh” that was thrown into 1942. The Great Patriotic War ended with Victory a whole year earlier—on May 9, 1944. But after all, the main goal is not only to win the war, but also the post-war world—to ensure that in the USSR there is “nothing but the USSR.” However, it turns out that many of the problems in our reality that led to the collapse of the Soviet Union arose precisely then.