Israel's position on ISIS

"Israel’s position remains unchanged: that IS endangers Israel far less than the Shiite axis from Tehran to Beirut. Why is this so? A highly placed Israeli intelligence source put it this way on condition of anonymity: “Both Iran and IS want to destroy Israel, but only Iran is capable of doing so. Iran is capable of dropping 100 tons of explosives on Israeli cities all by itself, and a similar quantity via Hezbollah. The Islamic State, by contrast, is Kalashnikov rifles on pickup trucks.” "