The White House refuses to confirm but says ‘substantial assistance’ is being provided.
David S. Cloud and Raja Abdulrahim
LA Times 
June 22, 2013
WASHINGTON — White House officials refused to comment Friday on a Los Angeles Times report that CIA operatives and U.S. special operations troops have been secretly training Syrian rebels with anti-tank and anti-aircraft weapons since late last year, saying only that the U.S. had increased its assistance to the rebellion.
The covert U.S. training at bases in Jordan and Turkey began months before President Obama approved plans to begin directly arming the opposition to Syrian President Bashar Assad, according to U.S. officials and rebel commanders.
“We have stepped up our assistance, but I cannot inventory for you all the elements of that assistance,” White House Press Secretary Jay Carney said. “We have provided and will continue to provide substantial assistance to the Syrian opposition, as well as the Supreme Military Council.”
The Supreme Military Council is the military arm of an umbrella group that represents more moderate rebel factions, including the Free Syrian Army.