This, they are saying "we are muslims" but they do not know what is the meaning of "Islam".
You can't run away by saying something like this. The ISIS has support only from Muslims, and their plan is the complete extermination of all non-Muslims. And contrary to the popular myths, there is a lot of support for ISIS among the Muslims. Moreover, they are supported by Saudi Arabia, which is the decision taker for the Sunni Muslims around the world.
You can't keep your anecdotes straight. First you say Israel is helping ISIS, then you say only Muslims support ISIS. You might run into less problems with sketchy facts if you post a source to back up your claims once in awhile.
The Israel - Palestine conflict has nothing to do with this. Israel is actually supporting the ISIS. A few months ago, they bombed the Syrian army positions, in order to help the ISIS in gaining territory. Another NATO member, Turkey is supporting the ISIS by issuing passports to its fighters, so that they could travel to Iraq and Syria to join the fighting.