The Federated States of the World Caliphate! Check it out on
DeviantArt since it allows for larger sized images.
As Caliph Abu Bakr al-Baghdadi found out, founding your own Caliphate in the modern-day isn't as easy as you'd expect. With modern lightfast communication accessible in affordable devices small enough to fit in your pockets you'd surely expect this realm to function like a well-tuned clock. But as it turns out, rebel insurgencies also have lightfast communication. Soon finding sympathies with these rebel factions (in fact, he too used to be a rebel in his glory days), he sought out to federalize his subjects to allow some degree of self-governance for the member states.
Comprising of several states with one large central unified one (kinda like the Russian Federation), the World Caliphate is one of the leading economies in the world. From the sands to Sahara to the sands of Arabia and the sands of Kyzylkum, the World Caliphate is without a doubt one of the most diverse states out there. Though arguably responsible for some of the largest genocides in human history, it's still a pretty cool place to live, if you're a Sunni Arab.