Well the big thing about making peace, is that if you want it you're going to have to prepare for war "Si vis pacem, para bellum" "If you want peace, prepare for war" This is one of the core things that I think of based on the fact that if you're going to keep flaunting your armaments at countries that also have these arms no one is going to go to war with eachother.

Simply put, the Soviets and the US both had nuclear bombs and knew that if they dropped one on one another it would cause nuclear war and would obliterate the world as we know it.

So, it's horrible to say but if you want peace countries need to have nuclear arms, and other military armaments.