Jordan wrote:
Ed Kyle wrote:

Once operational, the greatest rogue threat might be the use
of conventionally-armed missiles against the U.S., something
like the rain of missiles that fell on Israel recently. Such an
attack would quickly deplete an anit-missile system and it
would be politically impossible to respond to it with nuclear
weapons.

First of all, if any Power chose to launch a "rain of missiles" at
American cities, we would certainly respond at least with a
counterattack on the enemy's strategic targets including their missile
launchers; we might respond with unrestricted conventional bombardment
of their cities, if sufficiently provoked.

I would only point out that Israel was unable to stop the attacks,
despite total control of the air, just as the U.S. was unable to
stop the Scud attacks during the first "Gulf War". The use of
mobile launchers to perform "shoot and scoot" attacks makes
it nearly impossible to stop such attacks. Even if the launcher
positions are known, it may prove impossible to take them
out. The U.S. was, for example, never able to "take out"
(or even locate) the mortar and rocket positions that pounded
Khe Sanh for weeks during the Vietnam War even though the
positions were all within relatively short range of the base.

Secondly, I don't believe that it _would_ be "politically impossible"
to respond to such an attack with nuclear weapons.

It depends on the circumstances. A nuke-armed China or Iran
threatening retaliation might limit the response options, for
example. I sincerely hope we never have to find out for sure.

- Ed Kyle