A deadly attack in France reminds us the threat remains real. Sadly, brain-scan research tells us little about the real world of terrorism and political violence.

It’s time to pay attention. The fighting in Syria’s Idlib province is sending refugee shock waves surging toward a Europe that’s unprepared politically—or morally—to receive them.

After another burst of self-inflicted FBI attention, Atomwaffen Division is in trouble.

The celebrated directors Jean-Pierre and Luc Dardenne open up to Nick Schager about “Young Ahmed,” their new film that explores the radicalization of a young Muslim boy.

The new four-part Netflix docuseries features the only interviews with the ex-genius turned Unabomber, as well as testimonials from his close family and friends.

Tobias Rathjen killed nine people of migrant backgrounds in Hanau's laid-back shisha bars, then shot his mother and himself.

The bureau revamped its homegrown-terror efforts to include “people on either side” of the abortion debate. But there’s almost no evidence of pro-choice violence.