Find someone to bomb, find someone to shell, find someone to send troops to stomp on, without a plan for what happens after.
http://www.stonekettle.com/2015/11/the-price-of-civilization.html
I mean, it's not like we haven't followed that course before.
Also ways high on the list of how not to defeat terrorism:
1. Assume that terrorists are only out to provoke terror, not to provoke a reaction that escalates the battle.
2. Conflate "what do we do to stop terrorism?" with "how can we turn this to an advantage in our current political campaign?"

