You need to read definition of "irony"
Irony is on you, because it was you who said there was no promise not to expand NATO and who then broke that promise. So now you point this memorandum and look ridiculously ironic.
First of all, *I* didn't point to the memorandum.
Second of all, the only reason I've ever stated there was no such promise is because your camp claimed there was; which way back when you guys first made that claim, I showed to be factually wrong. However, you guys have consistently been crying about how NATO's violated this (non-existent) agreement and how that somehow justifies Russia's stance and actions. Therefore, it is hugely ironic (and no, I'm not the one who needs to understand the definition of the word) that you would cry foul about a memorandum (which IS in fact a written and signed agreement) that shows that it is Russia, and not NATO, who has violated its own agreements.
NATO never promised not to expand eastwards; this is misinformation based on perpetuation of a historical misunderstanding. If I thought you were receptive to understanding, I'd offer to explain it in detail... again. But I don't think you are.
"The Budapest Memorandum on Security Assurances is a political agreement signed in Budapest, Hungary on 5 December 1994, providing security assurances by its signatories relating to Ukraine's accession to the Treaty on the Non-Proliferation of Nuclear Weapons. The Memorandum was originally
signed by three nuclear powers, the
Russian Federation, the United States of America, and the United Kingdom. China and France gave somewhat weaker individual assurances in separate documents."
The whole thing is even more ironic because it was *Russia* that claimed that it was the west that violated the memorandum because of the claim that the US sponsored the coup (something for which we STILL have zero evidence that holds up, by the way). So it's somehow perfectly okay for Russia to make a vague claim that the west violated a *written agreement it is party to* without the evidence to back it up... but when we point out that they themselves violated the memorandum they signed with actual evidence to back up the claim, somehow that's not okay.
That... is irony.