کشورهای حاشیه‌خلیج فارس

U.S.-led diplomatic efforts had aimed to make up for the recent lack of military progress and stave off a humanitarian crisis, but a deadly rebel attack could threaten the planned ceasefire.

The solidarity expressed at the latest regional gathering of senior U.S., European, and Middle Eastern defense officials, diplomats, journalists, and analysts was encouraging, though some aspects of Washington's policies in Syria and elsewhere still need clarification.

Recent survey results reveal the nuances in Saudi public opinion on a wide variety of pressing regional issues, and the role of foreign powers in resolving them.

Although broader public relations between Israel and the Gulf states have yet to take off, many of their economic, intelligence, and diplomatic ties are already at cruising altitude.

Since 2011, the Arab Gulf monarchies have likely absorbed several hundred thousand Syrians under temporary circumstances.

Two proliferation experts discuss the risk of other regional states pursuing nuclear capabilities of their own to counter Iran, and whether they have the necessary funds, technical capability, outside help, and political will.

A closer look at how an Iranian-linked Hezbollah chief bombed the Khobar Towers and walked free -- until last month.

The Washington Institute is studying the potential impacts of the Iran nuclear deal, including the effects of additional Iranian money from a post-sanctions windfall. Here are some of the most important impacts.

Beset by ISIS attacks, a war in Yemen, and growing worries over Iranian influence, the new Saudi leadership appears adrift.