What better way to encourage peace then to start building anti-nuke stations around the world to nullify that threat from all parties.
Some thing during the cold war, the stockpiles were enormous, not because we needed the power to destroy the world several times over, but because launch facilities might be destroyed.
Also, first strikes will be directed against the areas involved in the missile shield, because after that the rest is wide open.
I see the whole missile defense shield as an attempt to revive the cold war because it's good for defense contractors, those guys made untold billions.
I do see your point, and it does seem logical. It definitely would be nice though to remove the threat of any nuclear attack from or against any nation for the foreseeable future. Though I guess a nuclear strike might be less devastating than years of war in the long run huh? What a chilling world we live in.
There is a list somewhere of the number of 'close shaves', too long and too close to have any confidence that such a state could be maintained indefinitely. That was just a matter of time.