Any terrorism attacks the economy, because it undermines confidence in future events, thus diluting credit. And any jihadist is going to be interested inn how he can undermine the economies of Western nations.

The big question in my mind is how you make a jihadist willing to be shortsighted enough to think this is a good idea. Undermining the prosperity of others does not make life easier for yourself, unless those others are actively engaged in oppressing you. I suppose that could be argued, but it seems awful far-fetched to me.

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