[The Great RJ]

I would suggest we might want to keep a few of the large mutli -megaton city busters around for use in deflecting possible asteroids heading toward earth and publically targeted on N. Korea and Iraq and maybe Mecca.

[b4its2late]

and Iran, Syria and maybe Pakistan (cause I don't know how long they'll be able to keep the extremists at bay).

[RightWhale]

deflecting possible asteroids

Nukes won't do that job. Kinetic energy is vastly underrated.