The Budapest Memorandum only requires going to the Security Council if nuclear weapons are involved. There's no required action at all for non-nuclear attacks. This isn't "weaseling over the exact wording," it's just the plain language of the memorandum.

It really amazes me how much misinformation is out there about this thing. It only has six points, each one a single paragraph long. It's very quick and easy to read, yet people apparently can't be bothered to look up the actual text of the thing they're discussing.