Non-aggression pact

A non-aggression pact or neutrality pact is a national treaty between two or more states/countries where the signatories promise not to engage in military action against each other.^[1]

Sometimes non-aggression pacts and neutrality pacts have been considered different.^[2] In that case non-aggression pact is considered to include the promise not to attack the other signatories, while a neutrality pact includes a promise to avoid any support against the other signatories.^[2] In 19th century neutrality pacts have often been used to give permission to attack another state.^[2]

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.

An example of non-aggression pact is the 1939 Molotov–Ribbentrop Pact between the Soviet Union and Nazi Germany (the last, after all others), which lasted until the 1941 German invasion of the Soviet Union in Operation Barbarossa.^[1]

It has been found that major powers are more likely to start military conflicts against their partners in non-aggression pacts than against states that do not have any sort of alliance with them.^[1]

Aggression is forbidden by the UN Charter,^[3] so all UN member nations are under a treaty obligation not to commit any acts of aggression (of course this has often been broken in practice).

List of non-aggression pacts

• Treaty of London (1518)
• Soviet–Lithuanian Non-Aggression Pact (September 28, 1926)
• Greek–Romanian Non-Aggression and Arbitration Pact (March 21, 1928)^[4]
• Soviet–Afghan Non-Aggression Pact (June 24, 1931)^[5]
• Soviet–Finnish Non-Aggression Pact (January 21, 1932)
• Soviet–Latvian Non-Aggression Pact (February 5, 1932)^[6]
• Soviet–Estonian Non-Aggression Pact (May 4, 1932)^[7]
• Soviet–Polish Non-Aggression Pact (July 25, 1932)^[8]
• Soviet–Italian Non-Aggression Pact (September 2, 1933)^[9]
• Romanian–Turkish Non-Aggression Pact (October 17, 1933)^[10]
• Turkish–Yugoslav Non-Aggression Pact (November 27, 1933)^[11]
• German–Polish Non-Aggression Pact (January 26, 1934)^[12]
• Franco-Soviet Treaty of Mutual Assistance (May 2, 1935)
• Treaty of Saadabad (June 25, 1938)
• Hungarian–Little Entente agreement (August 22, 1938)
• German–British Non-Aggression Pact (September 30, 1938)^[13]
• German–Danish Non-Aggression Pact (May 31, 1939)^[14]
• German–Estonian Non-Aggression Pact (June 7, 1939)^[15]
• German–Latvian Non-Aggression Pact (June 7, 1939))^[15]
• Molotov–Ribbentrop Pact (23 August 1939)
• British–Thai Non-Aggression Pact (June 12, 1940)^[16]
• Hungarian–Yugoslav Non-Aggression Pact (December 12, 1940)
• Soviet–Yugoslav Non-Aggression Pact (April 6, 1941)
• Soviet–Japanese Neutrality Pact (April 13, 1941)
• German–Turkish Non-Aggression Pact (June 18, 1941)

References

1. 1 2 3 Volker Krause, J. David Singer "Minor Powers, Alliances, And Armed Conflict: Some Preliminary Patterns", in "Small States and Alliances", 2001, pp 15-23, ISBN 978-3-7908-2492-6 (Print) ISBN 978-3-662-13000-1 (Online)
2. 1 2 3 Brett Leeds , Jeffrey Ritter, Sara Mitchell, Andrew Long, "Alliance Treaty Obligations and Provisions, 1815-1944", "International Interactions: Empirical and Theoretical Research in International Relations", 2002, vol. 28, issue 3, p. 237-260, DOI: 10.1080/03050620213653
3. ↑ https://www.un.org/en/documents/charter/chapter7.shtml
4. ↑ Text in League of Nations Treaty Series, vol. 108, pp. 188-199.
5. ↑ Text in League of Nations Treaty Series, vol. 157, pp. 372.
6. ↑ Text in League of Nations Treaty Series, vol. 148, pp. 114-127.
7. ↑ Text in League of Nations Treaty Series, vol. 131, pp. 298-307.
8. ↑ Andrew Wheatcroft, Richard Overy (2009). The Road to War: The Origins of World War II. Vintage Publishers. p. 7. 
9. ↑ Text in League of Nations Treaty Series, vol. 148, pp. 320-329.
10. ↑ Text in League of Nations Treaty Series, vol. 165, p. 274.
11. ↑ Text in League of Nations Treaty Series, vol. 161, p. 230.
12. ↑ R. J. Crampton (1997). Eastern Europe in the Twentieth Century – And After. Routledge Publishers. p. 105. 
13. ↑ Ruth Hanna Sachs (2002). White Rose History, Volume I. Exclamation! Publishers. p. 246. 
14. ↑ Text in League of Nations Treaty Series, vol. 197, p. 38.
15. 1 2 R. J. Crampton (1997). Eastern Europe in the Twentieth Century – And After. Routledge Publishers. p. 105. 
16. ↑ Text in League of Nations Treaty Series, vol. 203, p. 422.