It could very well be that Syria has a nuke or two (maybe some or all of Saddam's WMD's). But I'm not sure Syria will be addressed by Israel. Didn't they say they hold the Lebanese government responsible--it was the US that impugned Syria and Iran?. This could well be a way for the US to exert pressure diplomatically to keep Syria out of the mix while Israel mops up the Hezbollah, Hamas, etc.
If one nuke goes off in the Middle East, many will go off.
That would be a gift to us all !