https://en.m.wikipedia.org/wiki/Budapest_Memorandum https://en.m.wikipedia.org/wiki/Budapest_Memorandum The only assurance of assistance built into the agreeme

https://en.m.wikipedia.org/wiki/Budapest_Memorandum https://en.m.wikipedia.org/wiki/Budapest_Memorandum The only assurance of assistance built into the agreement is that parties would complain to the UN security council. The Obama administration let Russia violate the agreement when they took Crimea. Putin's justification that Ukraine isn't a nation but a historically Russian territory only works if Russia pretends it was never a signatory, since recognition of Ukraine as an independent and sovereign nation was a part of it. In short, pieces of paper do not trump the fear of nuclear weapons.