This is in reference to Episode 5.
Julian Assange focused heavily on the fear in the West of a new Islamic empire or Caliphate in this episode. This isn't worth worrying about in my opinion, because fanatics cause a lot more disunity than unity. The Muslims spent much more time fighting with other Muslims, in Iraq, than they did against the Americans. It's the same thing with Christians too. Christians spend much more time fighting against other Christians than they do against non Christians. People who believe they have the best system will get into conflict with other people who also believe that they have the best system. If you look at Christianity, it's the world's biggest religion, but it couldn't be anymore disunited, that's a good reason to keep religion out of politics.
It's true that Muslims have the same race, religion, language, but they have lots of different tribes, traditions, cultures and rulers and those factors are something that would prevent them coming together into one system, unless it's an empire, like Turkey, ruling over all of them, but that's a more enforced unity. Iraq, Pakistan, Afghanistan and Libya show that tribal differences can really prevent national unity and if Muslims have so much trouble creating national unity, then how are they ever going to create a new Islamic empire? I don't see how they could do that. There isn't any major power in the Muslim world that would have the power to invade lots of other countries, like Turkey did and that doesn't include the fact that other non Muslim countries, with better technology, would go up against it and make an empire much more difficult for it. There's no chance in Hell that the Sunnis and the Shiites would ever come together either.