I agree with most things in this post...
however...
I feel that it should take at least 2-3 people in the nation to use a missile attack...
if it is an attack dependent on a nation, then we should not have anyone able to use it.
there should be a key like mechanism, where say
-3 states need to be online and "declare" or "initiate" a missile attack, where all 3 must click a button, all within 5 mins of each other.
-After this point, the missiles are engaged, and active, ready to be fired.
-Any one of the 3 people who initiated the sequence can fire the missiles.
-After 20 or 30 mins. the missiles deactivate, and in order to use them, the process must happen again.