Could a single piece of paper really make the world stop going to war?

History · Published 3 October 2026 Swipe more like this →

In short: In 1928, the world’s major powers signed a historic agreement to renounce war as a tool of national policy. While it failed to prevent the Second World War, this ambitious pact fundamentally shifted global norms, eventually providing the legal foundation for prosecuting aggressive war as a crime against humanity.

Following the devastation of the Great War, which claimed millions of lives and reshaped global borders, the international community sought a path toward lasting stability. French Foreign Minister Aristide Briand initially proposed a bilateral peace pact to the United States. However, U.S. Secretary of State Frank B. Kellogg feared such a deal would force America into unwanted military entanglements. To avoid this, Kellogg proposed expanding the agreement into a multilateral treaty open to all nations, effectively diluting the specific obligations while broadening the moral commitment to peace.

The resulting General Treaty for Renunciation of War, signed in Paris on August 27, 1928, contained two core articles: a pledge to abandon war as a national policy and a promise to resolve all disputes through peaceful means. Despite its lofty goals, the pact lacked any enforcement mechanism. It was famously tested and failed in 1931 when Japan invaded Manchuria, and it proved unable to stop the outbreak of the Second World War just over a decade after its inception. Critics often dismiss the agreement as naive, legalistic, or entirely ineffective in the face of realpolitik.

Yet, the pact’s legacy is more complex than its immediate failures suggest. It popularized the idea that aggressive, preemptive military intervention and territorial expansion were unacceptable, establishing a new global standard. This shift was cemented in 1945 with the creation of the United Nations. Furthermore, the pact provided the essential legal basis for the Nuremberg and Tokyo Tribunals, where leaders were held accountable for starting aggressive wars. By framing war as a violation of international law rather than a sovereign right, the treaty helped pave the way for the modern era’s focus on international security and collective accountability.

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