How Come Israel Never Attack ISIS / Al Qaeda and ISIS and Al Qaeda Never Attack Israel?

I just wonder: "How come Israel never attack ISIS / Al Qaeda and 

ISIS and Al Qaeda never attack Israel?"

Are they Good Friends?

When Saddam Hussein, Gaddafi, and Assad are strong, there is no ISIS or Al Qaeda. But when US come in, suddenly there are many Al Qaeda and ISIS everywhere. Funny isn't it?

The Syrian War that backed by US and NATOs are the source of problem. That's the source why ISIS exist now.

Why isn’t the Islamic State fighting Israel?

The relentless Israeli assault on Gaza has yet to stop. But even as the death toll has now surpassed 1,600, the Islamic State (IS) and its newly established “caliphate” has not moved a muscle, nor is it expected to do so anytime soon. So why is IS – formerly known as the Islamic State in Iraq and Syria (ISIS) – not fighting Israel? 

http://english.al-akhbar.com/node/20982

Why aren't ISIS and Al-Qaeda attacking Israel?

For all of Israel’s whining about how it is being targeted by “Islamic extremists” and “terrorists,”(which should be translated to mean Palestinians, Iran, or any other secular or nationalist Arab government in the region) there is a curious and deafening silence when it is confronted with actual terrorists and Muslim fanatics such as ISIS, al-Nusra, and the myriad of other fundamentalist groups waging jihad in Syria and Iraq.

This bizarre silence has yet to raise the eyebrows of the somnambulant general public.

While Israel does not respond with its usual apoplectic frothing of victimhood and danger regarding these terrorist groups that have now so infested the Middle East as to make the entire region a general war zone, it is important to point out that these same terrorist groups do not launch coordinated military attacks in Tel Aviv, they launch them in Damascus and Mosul – cities belonging to secular nations seen by Israel as the enemy.

The question then is “Why?” Why does Israel not share the concern it has over Palestinians, Iranians, Syrians, and Lebanese with al-Nusra, ISIS, and al-Qaeda? Why do these groups wage jihad against Israel’s enemies but not against Israel itself? 

http://www.abovetopsecret.com/forum/thread1033961/pg1