I agree.
Your assessment of this situation
is quite correct.
You don't have to be a Tom Clancy to work
out a scenario where Iran secretly transports a crude
Hiroshima-yield nuclear device by means of a 'civilian'
aircraft ito [perhaps] Syria where the Hezbollah
would secretly take possession of such a device.
Scary.
But I think its up to the American, or Israeli spooks
to do their thing now.