[1992spacemovie]

In my eyes they are. For what it is worth, with the exception of this recent period (Ukraine), both the US and Russia for the most part made pretty good-faith efforts to comply with what their diplomats signed. I'm sure there were undeclared vehicles that were not disclosed, but I imagine those are not that plentiful, and certainly not in the quantity that would make a strategic difference (thousands sitting spare, ready to fly, all it needs is a warhead mounted an hour before launch).

I view arms control as a reduction of the number of variables in play (launch vehicles, warheads, etc). Both sides will always retain their God-given right to unleash nuclear holocaust, but both sides also reason they don't need 10,000+ warheads to do that. They can accomplish that goal with far less nukes than war planning 40 - 50 years ago called for. Partly that is due to accuracy having increased rapidly since gen 1 ICBM. There is a great book about missile guidance and accuracy, it is called "Inventing Accuracy". If you can't find a local copy or can't afford it, the Internet Archive has a PDF you can check out and read. Really insightful as to the "why" we don't require 30,000 nukes (1965) -- we only require ~5000 today and the enhanced accuracy makes them even more potent than prior bomb designs (which had a much larger yield).