Citation needed.
The Ukranian constitution has no amendments even mentioning NATO.
And Zelenky demanding nuclear weapons is a recent development. So not "tried" but "trying right now". Not even the Russians claimed such prior.
And I don't watch MSNBC or whatever else "msm" is supposed to be. Bold of you to assume I not only watch American news, but also a specific broadcaster. That's got to be like a less than 50% chance.