Islam is an extremely young and sect-riven religion, probably at a level of evolution comparable to the Christian controversies of the first and second centuries AD. (Which relative is the *real* conduit of Mohammed's version of God's instructions to his people?) This is so absurd, so painful, so avoidable. But because of Religious Pride, civilization may end where it began, barricaded or in catacombs at the Tigris and Euphrates, all because of an Islamic family dispute that goes back many hundreds of years. Forget about the current Salman. 
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Islam, Christianity, and Judaism are all intimately interrelated Faiths. Yet like the First, Second,  and Third Churches of some Faiths that we can all recognize, they refuse to come together and would rather foment WW III. And alas, look at who we have as Leader of the Free World!