In January, the U.S. military will hold its first simulation of an attack from a long-range Iranian missile on the United States, as opposed to a North Korean one:
It also would be more difficult testing the U.S. Ground-based Midcourse Defense (GMD) system against a missile that would be faster and more direct as it races toward the United States than a simulated strike from North Korea.
"Previously, we have been testing the GMD system against a North Korean-type scenario," O'Reilly said.
"This next test ... is more of a head-on shot like you would use defending against an Iranian shot into the United States. So that's the first time that we're now testing in a different scenario."
His comments came the same day that diplomats disclosed concerns among intelligence agencies that Iran tested a key atomic bomb component as recently as 2007. The finding, if proven true, would clash with Iran's assertion that its nuclear work is for civilian use.
The test would fire an interceptor missile from Vandenberg Air Force Base in California at a simulated incoming missile, launched from the Marshall Islands in the Pacific Ocean. An aide to O'Reilly estimated the cost at about $150 million.
Iran's long-range Shahab-3 missile has a maximum range of about 1,200 miles. Long enough to hit Israel or even Greece, but well-short of hitting the United States.
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