Editor’s Note: North Korea has long been a thorny problem for the United States as an erratic nuclear power that threatens America’s regional allies. Yet the problem may be even bigger for China, which h...

Editor's Note: This piece is based on a longer article I co-authored with my Brookings colleague Jennifer R. Williams, which ran in The National Interest.  ***

Editor’s Note: The latest attacks in Europe and the risk of terrorism from lone wolves and returned foreign fighters have led to an increased focus on preventing terrorism by stopping radicalization in t...