U.S.-Backed Syrian Rebel Commander Boasts of Fighting With Al-Qaeda Affiliate

U.S.-Backed Syrian Rebel Commander Boasts of Fighting With AQ Affiliate by Ariel Behar and Ravi Kumar   Investigative Project on Terrorism   A commander of a U.S.-backed Syrian opposition group says his fighters continue to ally on the battlefield with an al-Qaida-tied jihadist group. The United States continues to arm Nuruddin az-Zinki as it fights…