|This article needs additional citations for verification. (December 2013)|
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.