Wars, politics & history

Budapest Memorandum

5 December 1994

The Budapest Memorandum was a set of political agreements signed on the sidelines of a conference of the Organization for Security and Cooperation in Europe by Ukraine, Russia, the United States and the United Kingdom, with France and China giving separate statements. Ukraine had inherited a large part of the Soviet nuclear arsenal, and it agreed to give up the weapons and join the Non-Proliferation Treaty as a non-nuclear state. In return the signatories gave assurances to respect Ukraine's independence, sovereignty and borders and to refrain from the threat or use of force against it. These were assurances rather than binding security guarantees that required military defense. Russia's annexation of Crimea in 2014 and its full-scale invasion in 2022 were widely seen as violations, and the memorandum became a central point in debates on nuclear non-proliferation.

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