Axis attack on the USSR (1941)
During which date does Soviet Union negotiations to join Tripartite Pact took place?
World War II
Molotov–Ribbentrop Pact Slovakia during World War II Tripartite Pact Japan–Soviet Union relations Non-aggression pact
Molotov–Ribbentrop_Pact-German–Soviet_Axis_talks Slovakia_during_World_War_II-Second_World_War Tripartite_Pact-Soviet_Union Japan–Soviet_Union_relations-1932–1945:_Deteriorating_relations_and_war Non-aggression_pact-Abstract
After Germany entered a Tripartite Pact with Japan and Italy, Ribbentrop wrote to Stalin, inviting Molotov to Berlin for negotiations aimed to create a 'continental bloc' of Germany, Italy, Japan and the USSR that would oppose Britain and the USA. Stalin sent Molotov to Berlin to negotiate the terms for the Soviet Union to join the Axis and potentially enjoy the spoils of the pact. After negotiations during November 1940 on where to extend the USSR's sphere of influence, Hitler broke off talks and continued planning for the eventual attempts to invade the Soviet Union. 
The Tripartite Pact, also the Three-Power Pact, Axis Pact, Three-way Pact or Tripartite Treaty was a pact signed in Berlin, Germany on September 27, 1940, which established the Axis Powers of World War II. On November 24, 1940, Slovakia signed on to the Tripartite Pact. After a few months, Hitler asked the newly formed Slovakian Republic to join in the military action against Poland. 
Other nations involved. Soviet Union. Just prior to the formation of the Tripartite Pact, the Soviet Union was informed of its existence, and the potential of its joining. Vyacheslav Molotov was thus sent to Berlin to discuss the pact and the possibility of the Soviet Union joining it. For the Soviets, they considered joining the Tripartite Pact to be an update of existing agreements with Germany. On Molotov's visit, he agreed in principle to the Soviet Union joining the pact so long as some details, such as Soviet annexation of Finland, could be worked out. The Soviet government sent a revised version of the pact to Germany on November 25. To demonstrate the benefits of partnership, the Soviet Union made large economic offerings to Germany. Regardless of the talks however, the Germans had no intention of allowing the Soviets to join the pact. They were already in the preparation stages for their invasion of the Soviet Union and were committed to doing so regardless of any action the Soviets took. When they received the Soviet offer in November, they simply did not reply. They did, however, accept the new economic offerings, and signed an agreement for such on January 10, 1941. 
After the Japanese invasion of Manchuria and the establishment of the puppet state of Manchukuo in 1932, Japan turned its military interests to Soviet territories. Soviet-Japanese relations sharply deteriorated after 1936. This stemmed from the conclusion of the Anti-Comintern Pact between Japan and Nazi Germany in November 1936, which was designed as a defense against international communism. The first major Soviet-Japanese border incident, the Battle of Lake Khasan (1938), happened in Primorye, not far from Vladivostok. Conflicts between the Japanese and the Soviets frequently happened on the border of Manchuria, escalating into an undeclared border war which was decided in the Battle of Khalkhin Gol (1939), which took place at the Mongolian-Manchurian border. The Soviet Union won decisively, and deterred Japan from any further aggression during World War II. In 1941, two years after the border war, Japan and the Soviet Union signed a neutrality pact. Later in 1941, Japan would consider breaking the pact when Nazi Germany invaded the Soviet Union (Operation Barbarossa), but they did not, largely due to the defeat at Battle of Khalkhin Gol, even though Japan and Nazi Germany were part of the Tripartite Pact. At Yalta in February 1945, Stalin promised Roosevelt that the USSR would enter the war against Japan 90 days after the defeat of Germany, which took place in May. It met that timetable by shifting large forces across Siberia. In April 1945, Moscow annulled the neutrality pact. The Soviet invasion of Manchuria began on August 8, 1945, after the atomic bombing of Hiroshima (August 6). 
A non-aggression pact is a national treaty between two or more states/countries agreeing to avoid war or armed conflict between them and resolve their disputes through peaceful negotiations. Sometimes such a pact may include a pledge of avoiding armed conflict even if participants find themselves fighting third countries, including allies of one of the participants. It was a popular form of international agreement in the 1920s and 1930s, but has largely fallen out of use after the Second World War. Since the implementation of a non-aggression pact depends on the good faith of the parties, the international community following the Second World War adopted the norm of multilateral collective security agreements, such as the treaties establishing NATO, ANZUS, SEATO and Warsaw Pact. The most famous non-aggression pact is the 1939 Molotov–Ribbentrop Pact between the Soviet Union and Nazi Germany, which lasted until the 1941 German invasion of the Soviet Union in Operation Barbarossa. Its fame partly derives from the fact of being labelled as a military alliance by anti-communists. As of this date, however, a non-aggression treaty between the two has yet to be formulated. 