If i may add, building and testing interceptors, at least from time to time, is also a certain kind of life insurance, should a state such as Iran or North Korea be in posession of ICBMs one day. Starting development of such, if these failed nations are already threatening us with real nukes, would be too late.
North Korea already possesses ICBMs that can strike the continental U.S. Arguably GMD's main task beyond protecting against accidental launches is to defend against a limited number of North Korean ICBMs, though this will become increasingly difficult as NK's arsenal is increasing.
If i may add, building and testing interceptors, at least from time to time, is also a certain kind of life insurance, should a state such as Iran or North Korea be in posession of ICBMs one day. Starting development of such, if these failed nations are already threatening us with real nukes, would be too late.
North Korea already possesses ICBMs that can strike the continental U.S. Arguably GMD's main task beyond protecting against accidental launches is to defend against a limited number of North Korean ICBMs, though this will become increasingly difficult as NK's arsenal is increasing.