After the destruction of the PQ-17 convoy, the fate of the polar convoys hung in the balance. However, the next convoy PQ-18 managed to break into Russia, although it suffered heavy losses. The Admiralty believed that the British fleet had won. But in a strange way, this victory caused sharp disputes between Churchill and Stalin, seriously complicating Soviet-British relations. Intended for a wide range of readers, both specialists and lovers of military history.