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.

A long-lasting security alliance with the Philippines remains at the heart of U.S. strategy in the Asia-Pacific, a region that includes the disputed South China Sea.

A leading killer among diseases is now targeted for eradication by the middle of this century. Efforts to combat malaria are costly and challenging.

With Iraq weakened and a civil war raging in Syria, it’s unclear whether local forces and a U.S.-led international coalition can roll back the self-proclaimed Islamic State.