The risk of US/UN intervention should be high, because that was the quid pro quo for Ukraine to abandon its nuclear weapons in the Budapest Memorandum. No coun

The risk of US/UN intervention should be high, because that was the quid pro quo for Ukraine to abandon its nuclear weapons in the Budapest Memorandum. No country with nuclear weapons is ever going to give them up again. No security assurances will be seen as sufficiently reliable. https://en.wikipedia.org/wiki/Budapest_Memorandum_on_Security_Assurances https://en.wikipedia.org/wiki/Budapest_Memorandum_on_Securit...