Not that I agree with op but you could make a solid argument that they're the reason we haven't had war between major powers. You could probably argue the whole

Not that I agree with op but you could make a solid argument that they're the reason we haven't had war between major powers. You could probably argue the whole Ukraine Russia issue is because Ukraine gave up it's nuclear weapons in exchange for a promise of peace (and other countries can take notes on the result of that)