Charges of foreign power interference in the U.S. presidential election have raised grave national security concerns and touched off multiple federal inquiries that could drag on for months.

Foreign policy issues regularly come to the fore at the national political conventions, especially during periods of global instability. Sometimes the events are marked by bitter disagreements within…

The Muslim separatist group, based in the Xinjiang province in northwest China, presents a heightening security challenge for Beijing.

Targeted killings, especially those conducted by drone strikes, have become a central component of U.S. counterterrorism operations around the globe.