US envoys make second trip to Syria since March

Two senior U.S envoys have arrived in Damascus in a visit that signals the Obama administration continues to explore ways to improve relations with a country deemed a state sponsor of terrorism.

The visit is the second to Damascus since March by the top US diplomat for the Middle East, Jeffrey Feltman, and National Security Council member Daniel Shapiro. Syria's ambassador to Washington, Imad Mustafa, called Syrian-US relations "positive and constructive."