So, we are talking about an "unsophisticated" nuclear warhead?
Can you explain this "simple" device to us?
Unsophisticated terrorist schemes would be along the lines of infecting "martyrs" with small pox and buying that person a ticket to a UT football game.
Unsophisticated would not include stowing a large nuclear warhead into a container ship (large enough to blow the container ship, the port, and the town beyond), programming it with GPS coordinates, and then assuring that it blows at the time in which the maximum amount of people would be in the kill zone.