It is one of the strangest states ever created. The Islamic State wants to force all humanity to believe in its vision of a religious and social utopia existing in the first days of Islam. Women are to be treated as chattels, forbidden to leave the house unless they are accompanied by a male relative. People deemed to be pagans, like the Yazidis, can be bought and sold as slaves. Punishments such as beheadings, amputations and flogging become the norm. All those not pledging allegiance to the caliphate declared by its leader, Abu Bakr al-Baghdadi, on 29 June last year are considered enemies.