Syria placed long-range missiles equipped with chemical warheads on high alert after an attack on a Syrian nuclear plant in 2007, WikiLeaks documents obtained by Yedioth Ahronoth indicate.
In March 2008, then Prime Minister Ehud Olmet met with then Minority Leader of the US House of Representatives John Boehner and several US congressmen. Olmert addressed Operation Cast Lead which was in the final planning states and said that Israel had plans to cause considerable damage to Hamas in Gaza. He then added that the government was considering when and how to act.
…When confronted with a question on the attack on the Syrian nuclear plant in Deir ez Zor, the former prime minister said he never publically addressed the matter but noted the fact that gas tanks belonging to Israeli planes were found near the Syrian-Turkish border.
“Bashar is no dummy,” he added, since he decided not to respond to the September 2007 event. Olmert said that Syria’s mobile missile system were on full alert, but that Assad decided not to order them to fire. “That took discipline,” he noted.