Afghanistan, Aug. 2 -- U.S. envoy Tom Barrak stressed support for Syria's interim president Ahmad al-Shar'a is vital to curb Iran's influence, prevent ISIS's resurgence, and stabilize the conflict-torn nation.

U.S. Special Envoy for Syria, Tom Barrak, has said Washington's support for interim Syrian President Ahmad al-Shar'a is "vital" to counter Iran's influence and prevent ISIS's resurgence.

Speaking to reporters in Washington on Friday, August 2, Barak stressed that U.S. goals align with those of al-Shar'a and his allies, but "many groups" are seeking to disrupt this cooperation.

He warned that the Islamic Republic poses "a far greater challenge for everyone," adding that forces controlled by Iran's Revolutionary Guard and remnants of...