Nice skating. My point is that currently there is no Caliphate anywhere, but the article called Iraq one. Is this correct or incorrect?
Moslems are conquerors and pirates almost by definition- it's in the Book- and an Islamic polity cannot produce sufficient wealth to buy or build the technology required to keep any really large entity together. They can keep growing so long as the West feeds the Beast which the West has been doing ever since the Sauds were allowed to nationalize Arabian oil and so long as America keeps sending money and arms directly to Moslems, any Moslems.
If the West collapses and Islam sweeps over the world then Islam will proceed to depopulate the world as the Left would love to see happen. Moslem societies produce only sufficient for bare subsistence of the masses and a little more that supports .5% or so in splendour becaues the Caliph or Sultan or Dey steals all the excess over bare subsistence, so the people have no incentive to produce. As droughts and storms and internecine raiding destroy production and crops, famine becomes a recurrent phenomenon and population declines. Technology regresses and the machines are destroyed in righteous religious fervor or just wear out. Cropland is converted to semiarid sheep ranges as happened to North Africa and Anatolia which were once the breadbaskets of Rome and Byzantium.
All of that is why the idealistic (insane) Left is in love with Islam. They don't wish to be Moslem but they feel, at least subconsciously, that Islam must prevail to depopulate and Save the Earth.