Just a little thing - over 200 confirmed dead, so far.

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From what I've learnt in school, it's something to do with "Lesser Jihad". Greater Jihad is a personal struggle, Lesser Jihad is a 'religious war' type struggle, that is called by a religious leader. In this case, it was the Taliban, and Bin Laden.

Now one of the things about taking part in Lesser Jihad, is that Allah 'praises it', meaning you get a certified place in Heaven should you die on the job. Which is why we get so many suicide bombers, and what not.

Take all of this with a pinch of salt, because I'm only guessing and using what I've been taught.