A profile of the Japanese religious cult that carried out the 1995 subway sarin attack.

A profile of the international terrorist network that the United States has singled out as the most serious threat to U.S. security.

Lawmakers are considering sharp cuts to defense spending as part of mandated deficit-reduction efforts. This Backgrounder discusses the effects of such major cuts and implications for U.S. military s…

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

A new arms control agreement with Russia has met political opposition in the U.S. Senate, and some analysts believe its fate is tied to the outcome of the 2010 midterm elections. This Backgrounder ex…