Not necessarily. Since the terrorist murderist killers know they would most likely get only one chance to hit the Great Satan with WMDs -- they would need to make absolutely certain that all pieces were in just the right places. They also need to make ready the WMDs whatever they may be.
And there are few experts who do NOT believe that the terrorists won't try. America will surely be the target of WMDs when and if the terrorists obtain / perfect them.
This would take years of planning and changing plans in reaction to our defensive measures especially over these recent years.
The threat remains as real as it always has. It is the fear of official DC and NY, so you can believe the threat is taken seriously.
If not soon, then one day, the terrorists thugs -- fueled by their ferocious hatred -- will make their move when they are ready at a date and time that they choose.
Agree. They have a saying that goes something like:
"I waited 200 years to take my revenge, then I cursed myself for my impatience"
I'm not in the 'if they had them they would have used them' crowd. The Eastern and Middle Eastern cultures are not generally into the instant gratification thing... as we are in the West.