Bruce Hoffman — ISIS has studied the past successes of terrorism all too well

History lesson. 

Terrorism is traditional political-military tactic of the weaker party to conflict. It's inexpensive, readily available, simple to implement, and history shows that it works. It also harms a lot less people and causes less damage than conventional military operations for political ends.

Aeon
ISIS has studied the past successes of terrorism all too well
Bruce Hoffman, director of Georgetown University’s Center for Security Studies and a senior fellow at the US Military Academy’s Combating Terrorism Center