DOD sharply rebuked Syria's willingness to use its arsenal of Scud missiles, and now the Fateh, against the rebels.
Tehran has also begun outfitting its fleet of warships with the long-range missile, spurring concern among Navy commanders in the Gulf region.
American officials told CNN the missile launches were not aimed at rebel strongholds located along the Turkish-Syrian border. Concerns in Ankara over Syrian missile capabilities prompted Turkey to request several batteries of U.S.-built Patriot anti-missile weapons from NATO.
The alliance approves the Patriot deployment in November. The weapons are scheduled to be in place along the Turkish border by January.