Interesting Batboy.
I think this is a bit of a pointless argument, because of course some of the people who are on waiting lists to strap explosives to themselves will surely be so desperate and in such an extreme state of mind that you could if you want to apply the word 'mad' to them. That last bit up there, the conclusion, is a little worrying though - I mean it looks a lot like he's suggesting that depressed people should be put on a watch list.
Also, the study of Palestinian failed bombers by the Israeli psychologist concludes with this not totally convincing thing:
"None of the 15 would-be suicide bombers we interviewed suffered from a psychosis, but they had one of two personality types. Two-thirds were dependent-avoidant: such people find it hard to say no to authority figures and are more likely to cooperate to carry out tasks against their own judgement. They are also greatly influenced by public opinion. The rest were impulsive and emotionally unstable. '
That just sounds like.. people, not especially mad people ?