Doug RAnyone who says "Sadam has plenty of money" is clearly talking out of the wrong orrifice.
Not that it matters . . he has enough to deliver a nuclear strike at some point in the forseeable future. And if he strikes anywhere it would be at Israel rather than the US. Far more kudos . . .
There is simply no logical basis for incurring the cost of this system to guard against a virtually non-existent risk. Except, of course, that it provides the US with the means of continuing their "subsidy through inflated budgets" subsidy of their aerospace industry - a neat way of circumventing their "philosophical opposition" to state support for industry.
G.