Given the involvement of the clerical fascist (Islamist) Muslim Brotherhood in the Syrian uprising and the support that it has from MB-backing Turkey's supposed "moderate" Islamist government, one can only hope that the intelligence is accurate. On the one hand, Assad's alliance with Iran (and North Korea) has posed a serious threat to Israel; on the other hand, the last thing Israel needs is another Islamist neighbor on its northern border. Lebanon, which is in the grip of Iran's Shiite Islamist proxy, Hezbollah, is a big enough problem for Israel--the Hitlerian terrorist group has been allowed to amass an arsenal of tens of thousands of missiles capable of striking targets across the Jewish State.
Then, again, it's also hard to believe that there was a time when Iran was an ally of both the United States and Israel. But that's another story.