The U.S. has stated that Syria “has had a chemical warfare program since the mid-1980s”, In 1988, a U.S. analyst described Syria's chemical weapon capability as more advanced than that of Iraq; however, Israel stated in 1989 that Syria had only the “potential for chemical warfare, but not more than that”.
But it was on July 23, 2012,when the Syrian government acknowledged for the first time that it had chemical weapons.