What's this? Another "deal" from The Deliverer of Kabul?
Shameless abnegation of the security guarantee represented by the US nuclear umbrella, in reliance upon which Ukraine de-nuclearised in the interest (as was thought) of de-proliferation & British & US security.
The Budapest Memorandum. A promise. Giving rise to a promissary estoppel. A contract.
Golfboy Don disregards contracts, because he holds the Rule of Law in contempt.