The memoranda, signed in Patria Hall at the Budapest Convention Center with US Ambassador Donald M. Blinken amongst others in attendance, prohibited Russia, the United States and the United Kingdom from threatening or using military force or economic coercion against Ukraine, Belarus, and Kazakhstan, "except in self-defence or otherwise in accordance with the Charter of the United Nations." As a result of other agreements and the memorandum, between 1993 and 1996, Belarus, Kazakhstan and Ukraine gave up their nuclear weapons.