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Opposition leader Juan Guaidó has declared himself president. But even if he succeeds in restoring democracy, the hard part is just beginning.

A once-unified online world has broken into new warring states.

A guide to the U.S. midterms for foreign-policy wonks.

Victims of sexual violence and forced abortion during Colombia’s long years of conflict have yet to see justice.

Khashoggi ordeal spotlights staffing gap at embassies around the world.

Something terrible is happening in Xinjiang.

The U.S. Defense Department and big tech need each other—but getting along won’t be easy

With the Arctic melting and northern coast guards struggling to keep up, the next disaster is a matter of when, not if.

The militants’ new strategy is to out-govern the U.S.-backed administration in Kabul—and it’s working.

Decrypting nine new military programs that will change the face of battle.

Why the world desperately needs digital Geneva Conventions.

What happens when private firms have cyberweapons as powerful as those owned by governments?