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

The Zika virus, which has been found to cause severe birth defects, has spread across the Americas, prompting the World Health Organization to declare a global health emergency.

China and India increasingly vie for strategic advantage in the Indian Ocean, while also cooperating on some transnational security issues.  

China, India, and Pakistan have relatively small but growing nuclear arms programs. This nuclear competition is raising concern because of long-simmering tensions and a lack of efforts at minimizing …