My short answer would have been, “What’s to stop Ukraine if they rebuild or get nukes?”
In the end, if you want to make war and you are strong enough, you can make war and there are no rules that can stop you. The US could have done that at the end of WWII.
That’s where the saying “Peace through strength” came from.
“My short answer would have been, “What’s to stop Ukraine if they rebuild or get nukes?””
You ducked the question.