Not likely by half. The Islamo-fascists entire world belief assumes that it would be impossible for Infidels to destroy their holiest of holy sites, that Allah would prevent it, as he cherishes his name. We might not even need a nuke. A surgical strike might do it. If we succeeded in obliterating the black moon rock, i.e., meteorite, they worship as a token of Allah...the god of the heavans, then their religion is disproved. They will have been shown to be following a lie.
Now whether we would do it or not, at last somebody has been brave enough to put it out there. In the logic of national security, Tancredo has helped to create "Strategic Ambiguity". The terrorists will not know for sure what our real response will be, and the puke put out by the State Dept. will hopefully be discounted. That is if it's to have a DETERRENT effect.
So far the main players backing terror that remain, Syria, Iran, North Korea and China have gotten off scot-free. Al-Queada is free to make nuclear threats with impunity, and hope to accomplish them. China is free to nuke the U.S. while it openly plans on invading a peaceful neighbor...and U.S.-alligned nation... which they "claim" as they seek more "lebensraum".
We need more guts in Foggy Bottom. Supposedly there is a warrior princess there now. Haven't heard anything but squeaking mice, however.