Yemen could be edging toward civil war, particularly if the military gets involved in both sides of the conflict, says Yemen expert Gregory Johnsen, but the United States has limited ability to influ…

The world has entered a second nuclear age shaped by rising nuclear states and military technologies. Gregory Koblentz argues that the United States should work with the other nuclear-armed states to…

The success of a UN investigation into an alleged chemical weapons attack in Aleppo province last week will depend on a number of factors and could prove inconclusive, says CFR’s Gregory Koblentz.

The U.S.-Saudi relationship has become strained by increasing mistrust and misunderstanding—most recently over Egypt and Bahrain—and gone are the old foundations of the informal alliance: the Cold Wa…