Regarding "going nuclear," as mentioned in the previous post, here is one person's view.
The author, Joe Collins, is a retired Army Colonel of my acquaintance, who currently teaches at the National War College, but was, at one time, first Deputy Assistant Secretary of Defense for Stability Operations.
While he is more optimistic than I about the several potential outcomes of Iran obtaining a nuclear weapons capability, he does use that key phrase--"The Day After." We should all be thinking about "The Day After."
Does Mumbai make a difference? Worthy of discussion. The Comments Section is open.
Regards -- Cliff