World War II: Soviet foreign minister Vyacheslav Molotov arrived in Berlin to discuss the possibility of the Soviet Union joining the Axis powers.

World War II or the Second World War was a global conflict between two coalitions: the Allies and the Axis powers. Nearly all of the world's countries participated, with many nations mobilising all resources in pursuit of total war. Tanks and aircraft played major roles, enabling the strategic bombing of cities and delivery of the first and only nuclear weapons ever used in war. World War II is the deadliest conflict in history, causing the death of 70 to 85 million people, more than half of whom were civilians. Millions died in genocides, including the Holocaust, and by massacres, starvation, and disease. After the Allied victory, Germany, Austria, Japan, and Korea were occupied, and German and Japanese leaders were tried for war crimes.

Vyacheslav Mikhaylovich Molotov was a Soviet politician, diplomat, and revolutionary who was a leading figure in the government of the Soviet Union from the 1920s to the 1950s, as one of Joseph Stalin's closest allies. Molotov served as Chairman of the Council of People's Commissars from 1930 to 1941, and as Minister of Foreign Affairs from 1939 to 1949 during the era of the Second World War, and again from 1953 to 1956.

German–Soviet Axis talks occurred in October and November 1940, nominally concerning the Soviet Union's potential adherent as a fourth Axis power during World War II among other potential agreements. The negotiations, which occurred during the era of the Molotov–Ribbentrop Pact, included a two-day conference in Berlin between Soviet Foreign Minister Vyacheslav Molotov, Adolf Hitler and German Foreign Minister Joachim von Ribbentrop. While Ribbentrop and most of the German Foreign office wanted an alliance with the Soviet Union, Hitler had been planning to invade the Soviet Union. In early June 1940 as the Battle of France was still ongoing, Hitler reportedly told Lt. General Georg von Sodenstern that the victories against the Allies had “finally freed his hands for his important real task: the showdown with Bolshevism." Ribbentrop nevertheless convinced Hitler to allow diplomatic overtures, with his own hope being for an alliance. Ribbentrop and Benito Mussolini had already speculated at the idea of offering the Soviet Union a free hand in a southern direction. Ribbentrop's approach in general to foreign policy was different from Hitler's: he favored an alliance with the Soviet Union, while Hitler had wanted to pressure Britain into an alliance and pushing for "Lebensraum" in the east.