Remember this guy?

In his own words, he sees the acquisition of a nuclear weapon as a religious obligation, to inflict a "Hiroshima" on the United States.

According to this essay from The Nautilus Institute, had The U.S. not overthrown the Taliban and scattered Al Qaeda to the four winds, they would probably have a nuclear weapon by now. Of course, they would have had help from some very naughty nuclear scientists from Pakistan and from Islamic extremists in former Soviet republics that still house nuclear material.

Still at large.
Still looking for nukes.

Now, remind me again why Iraq is the most dangerous threat to American security?