So?
We have already obligated ourselves. The 2022 update shows they’re willing to pursue a nuclear path. I wouldn’t blame them. They’re in an existential fight, they trusted us and we sold them down the river.
This is Monty Python level comedy. Russia is pillaging its neighbor and all they can do is point to some diplomatic window dressing (Assurance or Memorandum) that nobody ever heard of and complain that “Russia is in violation.”