It isn&#x27;t effective?  So far in the past 15 years the terrorists have spent at most a few million dollars on their attacks, and the west has spent trillions.<p>The amount of economic damage to the west has been profound, and yet our leaders would be happy to spend 20% of GDP indefinitely on ineffective projects attempting to thwart terrorism.<p>So yes, terrorism works very well and often terrorist groups transition into respectable and moderate political parties.