Deploying anti-missile systems in Poland/Romania and potential deployment in South Korea does a lot of good to the world in the sense of balance and mutual trus

Deploying anti-missile systems in Poland/Romania and potential deployment in South Korea does a lot of good to the world in the sense of balance and mutual trust between nuclear powers. You can spout as much nonsense as you want about protecting allies from Iran and North Korea, but Russia and China will view it as nothing more as an hostile act, which warrants response of their own, fueling further escalation.