According to the New Scientist it appears that Apple has decided to cover all bases when it comes to how iTunes is used. Apparently, buried deep within the iTunes End User License Agreement is this little gem of a clause:

"Licensee also agrees that Licensee will not use the Apple Software for any purposes prohibited by United States law, including, without limitation, the development, design, manufacture or production of nuclear, missiles, or chemical or biological weapons."

So there you have it, in black and white, straight from the lawyer's mouth as it were: iTunes should not be used to help produce weapons of mass destruction. Of course, two things jump out at me regarding this truly mind-boggling bit of licensing. Firstly, I am extremely confused as to just how a terrorist could use iTunes software to produce such a weapon. Unless, that is, you think in terms of maybe recording audio instructions or playing back some kind of 'bomb making for dummies' video. OK then, let's assume that iTunes can indeed be put to such a nefarious use by followers of the axis of evil. In which case you surely also have to assume that these terrorists are going to have bigger legal worries than being in breach of an Apple EULA. I doubt it would act as any great deterrent in the overall scheme of things.