Conceived as the principal defenders of the 1979 revolution, the Islamic Revolutionary Guard Corps has evolved into an institution with vast political, economic, and military power.

A global surge in avian flu outbreaks in birds and some mammals is worrying poultry farmers, scientists, and health experts. The trend is provoking questions about the future of the disease and globa…

China is North Korea’s biggest trade partner and has leverage over Kim Jong-un’s regime, yet its policies focus more on border stability than nuclear threat.

Hobbled by foreign interventions, political instability, and natural disasters, the former French colony is paralyzed by multiple crises.

The U.S. government responds to scores of disasters each year in coordination with foreign, state, and local partners, but more frequent and severe storms, fires, and floods are straining resources.

Military experience gained from fighting in Syria’s civil war and decades of clashes with Israel has strengthened the Iran-backed group, but politically, its clout among Lebanon’s populace may be wan…