Evangelical Christians have been a force in U.S. society dating back to the nineteenth century. But experts say in recent years their influence on U.S. foreign policy has grown, from humanitarian act…

Backgrounder: Experts say more should be done to reduce risk on both passenger and freight rail.

The U.S. midterm elections for Congress, typically dominated by domestic concerns, may turn on how the public views the role of majority Republicans on a wide range of foreign-policy-related issues, …

A profile of a militant Islamist Kurdish separatist movement seeking to transform Iraq into an Islamic state.

Gen. David Petraeus’ assertions about falling casualties in Iraq are supported by a range of objective sources. But his testimony to Congress does not establish whether the decline is attributable to…