I'm just saying regularly scheduled cargo inbound, not trying to sneak a jumbo jet through airspace. Are we allowing direct cargo flights in from these loosely controlled points of origin in the ME, North Africa? Jihadi Jamal packed in the crate with a device, he hears the wheels drop on approach, hello allah!
And no, I don't doubt they already have weapons here already. But you can put a bigger device in a cargo container and ship it here "fresh."
I would say no. There are two major scheduled cargo routes; Asia-Europe and Asia-USA
Two typical air cargo routes would go like this:
Shanghai - Dubai (refuel) - Amsterdam
Shanghai - Anchorage (refuel) - Chicago
United Arab Emirates is a major cargo hub, but their security is high.
Chartered cargo on the other hand could operate from anywhere. A chartered 747 from somewhere in North Africa would raise some eyebrows. I hope...