Accordiong to Raw Story, the Israeli airstrike two weeks ago did not target a nuclear weapons facility, but was insteaddirected at a short range ballistic missile (SCUD type) missile depot. It was apparently brought on by a weapons handling accident in which chemical weapons were released, killing around 50 people.
It was thought to be an attempt to place chemical warheads on the missile.
Considering the paucity of the Syrian nuclear effort, one small research reactor that produces medical isotopes, one wonders who was spreading the rumor of nuclear weapons activity.