Religion’s place in the Iranian political system has long been debated among scholars, but a president who blurs the line has refocused attention on the topic

Western Europe’s burgeoning Islamic population continues to spark concerns about Muslim assimilation and a cultural divide.

As U.S. public opinion increasingly favors stronger immigration controls, the Senate considers a bill that would impose harsh penalties on illegal immigrants. The U.S.-Mexican relationship has suffer…

Hundreds of thousands of Iraqi security personnel have received U.S.-led counterinsurgency training. But big questions remain over their readiness to replace U.S. forces.

As U.S. lawmakers debate a cap-and-trade policy to combat climate change, experts say coal will continue to be a major part of the world’s energy mix, which will likely complicate efforts to curb gre…