Okay, for the sake of argument, let's say the Muslims are united in their hatred for Israel. I don't necessarily think that all Muslims hate Israel, but for the sake of this argument, lets pretend they do. Let's say they band together and succeed in defeating Israel and Israel no longer exists. What happens then? How long before the tribal infighting destroys Islam? Weeks? Months? Years?
The majority of Muslims indeed hate Israel, but not all Muslims do. They can't even all agree on what the Koran says. Islam is far, far from being united and IMO it never will unite for any cause, includig Israel, because of deep internal divisions. (thank God)
you could use an analogy here using different Christian sects/denominations. They don't see eye to eye on exactly how the bible is to be interpreted. Yet, do they not unite on several issues even though there are "deep internal divisions"?