I tend to disbelieve this kind of thing, given the physics of "suitcase nukes" and the level of sophistication of the jihadis. Politically they can be quite sophisticated, but when it comes to science they know nothing but explosives and poison. Furthermore, the idea that these jihadis have these weapons and are waiting to use them doesn't square with their past behavior. The fact of him using it to sell a book also doesn't sit right with me... if this stuff is true, simply writing a book about it doesn't seem to me to be an appropriate response.
What response would you prefer that Mr. Williams have? Would you like for him to buy time for a CNN television special?
And this conclusion is based on..............?