from https://www.armscontrol.org/factsheets/Ukraine-Nuclear-Weapons
To solidify security commitments to Ukraine, the United States, Russia, and the United Kingdom signed the Budapest Memorandum on Security Assurances on December 5, 1994. A political agreement in accordance with the principles of the Helsinki Accords, the memorandum included security assurances against the threat or use of force against Ukraine’s territory or political independence. The countries promised to respect the sovereignty and existing borders of Ukraine. Parallel memorandums were signed for Belarus and Kazakhstan as well. In response, Ukraine officially acceded to the NPT as a non-nuclear weapon state on December 5, 1994. That move met the final condition for ratification of START, and on the same day, the five START states-parties exchanged instruments of ratification, bringing the treaty into force.
However, it doesn't specify military assistance and the United States does not consider it legally binding, according to Wikipedia:
Under the agreement, the signatories offered Ukraine "security assurances" in exchange for its adherence to the Treaty on the Non-Proliferation of Nuclear Weapons. The memorandum bundled together a set of assurances that Ukraine had already held from the Conference on Security and Co-operation in Europe (CSCE) Final Act, the United Nations Charter and the Non-Proliferation Treaty[1] but the Ukrainian government found it valuable to have these assurances in a Ukraine-specific document.[25][26]
The Budapest Memorandum was negotiated at political level, but it is not entirely clear whether the instrument is devoid entirely of legal provisions. It refers to assurances, but it does not impose a legal obligation of military assistance on its parties.[1][26] According to Stephen MacFarlane, a professor of international relations, "It gives signatories justification if they take action, but it does not force anyone to act in Ukraine."[25] In the US, neither the George H. W. Bush administration nor the Clinton administration was prepared to give a military commitment to Ukraine, and they did not believe the US Senate would ratify an international treaty and so the memorandum was adopted in more limited terms.[26] The memorandum has a requirement of consultation among the parties "in the event a situation arises that raises a question concerning the ... commitments" set out in the memorandum.[27] Whether or not the memorandum sets out legal obligations, the difficulties that Ukraine has encountered since early 2014 may cast doubt on the credibility of future security guarantees that are offered in exchange for nonproliferation commitments.[28] Regardless, the United States publicly maintains that "the Memorandum is not legally binding", calling it a "political commitment".[29]
https://en.wikipedia.org/wiki/Budapest_Memorandum_on_Security_Assurances
= new reply since forum marked as read
