You're drastically misinterpreting the Budapest Memorandum. All the signatories agree to assurances regarding Ukrainian territorial integrity, that's all. Nobod

You're drastically misinterpreting the Budapest Memorandum. All the signatories agree to assurances regarding Ukrainian territorial integrity, that's all. Nobody guarantees Ukrainian territorial integrity under threat of arms ( what you're claiming), just a bunch of countries saying "Sure, i won't violate your independence and occupy your lands". There's nothing there about consequences for reneging on that promise.