Editor’s Note: After the United States helped overthrow Muammar Qaddafi in 2011, Libya was put on the back burner of U.S. policy even as its problems mounted. Moments of horrific anti-U.S. violence, like...

Editor's Note: “Lone wolf” terrorists—those who strike on their own without links to an established organization—are a nightmare for counterterrorism officials. They have no ranks to be penetrated, and o...

Editor’s Note: Foreign fighters in Iraq and Syria are a bit of an obsession for those of us at the Foreign Policy Essay. In this contribution, we’re pleased to go deep on the problem in Scandinavia—a sur...