If this were a Military argument only, I would agree. But this is also about America’s word. The Budapest Memorandum stripped Ukraine of it’s ability to defend itself under the promise of protection by the UK, the US, and some minor other players. Never again could we calm a hotspot in the world by negotiation. Do you want to necessitate the use of Armed force in all future conflicts that have American interest at stake? If America’s word is worthless, it only leaves force (blood shed) as the future leverage. A good reason to keep our word, wouldn’t you agree?
“But this is also about America’s word.”
C’mon now, stop it. I know you know how the Constitution works. The Senate gives America’s word through the ratification process and nothing of the sort happened here. The President can sign all the bar napkins he wants, but until the Budapest Memorandum is ratified in the Senate, it means absolutely nothing.