lucwarm hit the nail on the head. The primary threat is not an actual launch, but nuclear blackmail.
The day that Iran or Iraq has both nuclear warheads and an ICBM capable of hitting the U.S. or Europe, the entire balance of power will change, and not for the better. The risk of losing a city will tie the hands of the United States. The U.S. needs a credible deterrant to that missile, or it’s going to be faced with a continual game of brinksmanship, because unlike the Soviet Union which was rather restrained, these nations have proven themselves willing to bluster and threaten with any weapon they have.
And yes, it would seem crazy to launch a nuclear missile at the U.S., but are you really willing to gamble a few million lives that in the next, say, 50 years NO ONE will run one of these countries who might actually be crazy enough to do it?
Let’s say Saddam had a nuclear ICBM today. Just try to imagine how the whole situation would be different. First of all, we would not DARE put his back against a wall, because then he’d have absolutely nothing to lose by firing everything he’s got. So we would lose the option of invading him.
In turn, because he knows we will not invade, he has much more freedom to violate U.N. directives, attack his neighbors, gas his people, etc. Iraq would basically be completely out of our control.
Don’t forget that many of these countries are not solidly controlled from within. Often there are rival factions within the government that vie for control. What if Saddam’s internal enemy feels that the only way he can rise to power is to fire off a missile, let the U.S. take out Iraq in retaliation (while he hides), and then he comes out of hiding as an appeaser with hopes of leading a new government.
There are many more scenarios which would cause us great concern if one of these countries could hit us and we were powerless to stop them. For instance, a war between two of them could easily lead to one of them firing a missile at us in order to draw everyone into a larger war, much like Saddam tried to do against Israel during the Gulf war. Or a fanatic who hates the U.S. and is about to lose control of his country anyway may just fire a missile out of spite. If Saddam were surrounded in his palace and under siege, and knew that he only had hours to live, don’t you think he’d fire a missile at “The Great Satan” in order to become a hero in the Arab world?
No one is suggesting that NMD is ready today. Clearly it’s still in the development phase. But yesterday’s test should prove wrong all those people who said it will NEVER work. It’s clearly just a matter of incremental engineering improvements now.
The argument that it will spark a new arms race is also seriously flawed. In fact, you could just as easily argue that NMD will remove the incentive for these countries to spend significant portions of their defense budget on nuclear rockets, and PREVENT additional proliferation.