For $13,000 a terrorist could purchase enough diesel fuel, blasting caps, and fertilizer to build a daisy cutter.
That's roughly 0.1% of a small nuke. It makes a nice mushroom cloud to scare the news media into Chicken Littles and gets lots of global airplay, too.
It's also more than 1,000 times as powerful as the car bombs that are being set off in Baghdad. It's roughly a bit more powerful than what went off in OKC back in 1995.
And you could fit it into a truck, plane, or ship.
The technology involved is pre-WW1. Even Palestinians could be taught how to build one.
Call me when they manage to build a simple dasiy cutter. Until then, nukes are out of the question for their level of expertise.