While nobody knows whether or not there really was a chemical weapons attack in Syria or whether it was by Assad's forces or the Jihadists, there is no doubt that the firing of several rockets from Lebanon into civilian areas of Israel today was a genuine war crime. Unlike whatever happened in Syria, this attack had no military purpose. It was purely to terrorise civilians.
Of course you won't even hear about this attack in the main stream media and, in order not to upset Obama by actually defending themselves (the Americans have already demanded no response from Israel), the Israelis are desperately trying to minimize the event by calling it a "one-time incident". If they know this already I can only assume they have re-employed Uri Geller for his ability to see into the future.