Was it ever ratified by the Senate?
No but the Budapest Memorandum certainly has at least as much credibility in law as any guarantee of Kuwait's territorial integrity and sovereignty.
No. I’m not one for U.S. intervention, especially with the Obummer in the White House. But other allies are probably looking with great interest at our inaction, in regards to our promises to help defend our friends. Japan is wondering just what would we do if China intervened on Japanese territory. Probably thinking it’s time to count on themselves and go it alone. Just one example.
Why did the Ukraine give up there massive nuclear weapons which was the third largest in the world for a unsigned treaty !
That makes no sense.