Spiritual convictions and group identities inspire terrorist acts, study finds
![Kurdistan Workers Party militants](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2017/09/090117_BB_terrorists_main_FREE.jpg?fit=860%2C460&ssl=1)
SPIRITUAL FIGHT Like the ISIS soldiers they battle against, Kurdish fighters such as these buy into sacred values and group identities that strengthen the will to fight and die for a cause, research suggests.
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