If they still have weapons, they sure as hell haven't been using their existence as a deterrent. The whole point of having nukes is letting potential aggressors know that you have them, and that, if attacked, you may be crazy enough to use them.
You must know that Ukraine was attacked 4 years ago. So the "whole point" is not applicable in this case.
It’s why Russia is considered only a regional power, despite having a larger nuclear arsenal than the US. Their ability to perform intercontinental conventional bombing and troop deployment is non-existent. To cede this power to any other nation would be catastrophic to world peace.
What world peace? The US has started two wars that destabilized a whole region, and it shows no sign of restoring anything like peace there. World peace from such a belligerent nation, one that drone strikes most days of the week, is a bad joke or a real example of Orwell in action. How many pointless losing wars does the US need to start, how many governments does it need to overthrow only to see them revert to something even worse before you get that you’re about world peace.
You are not “the good guys.” The US is just in it for money, and that money only for a fraction of its population. It’s just a good thing the US can’t actually win a war it starts, or they’d have taken over by now. What’s actually happened is the likes of North Korea looked at what happened to Libya and Iraq and realized that they needed nuclear weapons. What a great outcome for “world peace” right? I’m sure those nuts won’t sell the technology, and other countries won’t follow suit so as not be “projected” all over.