Hard to say at this point. Imagine in 50 years historians would write like "but crazy regimes kept developing nuclear weapons to exterminat nations they don't like, and the whole world just kept watching doing nothing until it was too late".
Guatemala, Grenada, Panama, Afghanistan, Afghanistan (that's deliberate), Kuwait, Ukraine, Georgia, Vietnam, Vietnam, Vietnam (also deliberate)... all of these countries and more have been invaded by nuclear powers.