These dividing lines are now being made into battle lines by hardline Salafists, who are emerging as victors of the Arab Spring. They belong to the same mutant strain of Sunni Islam which inspired al-Qaeda. Their agenda is sectarian warfare, and they loathe Shia Islam as much as they do Christians and Jews. Their enemy lies not over a border, but in a church, synagogue or Shia mosque. The Salafists may be detested by the Muslim mainstream. But as they are finding out, you don’t need to be popular to seize power in a post-dictatorship Arab world – you just need to be the best organised. The West is so obsessed with government structure that it doesn’t notice when power lies elsewhere, and Islamist death squads are executing barbers and unveiled women in places like Basra.