Islam has become one of the hottest topics in politics worldwide. And yet the religion is little understood by non-Muslims. Instead ill-informed narratives gain currency, even amongst the better educated. It is a hard subject to get a grip on, but BBC Radio 4's The World This Weekend, on Sunday broadcast an excellent item on combating Islamic State (IS). Each of the three introductory interviews was illuminating, but that with Washington Islamic history expert Haroon Mughal made things a lot clearer to me.
As with most areas of current politics, we need to get a historical perspective. Most educated people will know that Islam has two main denominations, Sunni and Shia, which arose from a split in the 7th Century over who was the prophet Mohammed's successor as caliph. That, of course, remains an important fault-line, as followers of the two sects (and variations within) are intermingled in Iraq, Syria, Lebenon, Saudi Arabia, the Gulf and Yemen, to name the main hotspots. The split may be compared to the Christian split between Catholic and Orthodox, but geographically it is much messier. Apart from in Iran and, to a lesser extent, Iraq Shias are in the minority - but they are politically more coherent because there have reasonably clear hierarchies and, perhaps, they are used to a greater level of challenge.
The Sunni realm too used have clear hierarchies and orthodoxies, sponsored, in early-modern times, by the Ottoman Turks, who held sway across most of it; there was even a (nominal) caliph, until the Ottoman Empire fell in 1922. But this orthodoxy was subject to challenge, and a Reformation of sorts took place in the 18th Century, led in particular by Muhammad ibn Abd al-Wahhab. Like the Christian Protestant Reformation, it urged a back to basics creed, that rejected the corrupt ways that orthodox Sunni religion was practised. There are two key things to know about Wahhabism, which is now the orthodoxy in Saudi Arabia. It emphasises the separateness of true-believing Muslims; others are condemned to hellfire and not worthy of consideration. The second is that it takes inspiration from the customs of early Arab days, most notably in its strictures on sex, women and crime.
Mr Mughal's critical insight was that, unlike for the Christian Reformation, there was no Counter Reformation - a reinvigoration and counterattack by the orthodox. At this time the Ottomans were on the wane, and the orthodox structures were too weak to mount such an effort. That leaves a vacuum at the heart of Sunni Islam. There is a huge amount of scholarship which can be used to counter Wahhabism, but efforts to do so are weak and disjointed. Imams tend not to be up for the sort of intellectual challenge required. Meanwhile the Wahhabists have a clear message and are expanding their appeal. The ground has been prepared through official Saudi sponsorship of mosques and schools, which has spread throughout the world, and undermined orthodox teachings. Now more sinister forces are promoting Wahhabi ideas to the disaffected, in ways that a re socially corrosive.
There are two important groups of Wahhabist derivatives, both of which have a clear political agenda, that some refer to as "Islamism" . There are the violent ones (I don't want to call them "Jihadis", since it is important to preserve non-violent aspects of jihad, just as there are non-violent uses of "crusade", a very similar idea), promoted by terrorist movements like al-Qaeda and IS. They have a millenarian interpretation of the scriptures: that the end of the world is nearing. They extend the Wahhabist ideas of separateness to the practice of violence against non-believers, not least Muslims that do not share their binary world view. There are enough sacred texts and historical episodes from Islam's formative years to allow a coherent narrative - even if their practices go against a mass of Islamic scholarship. This narrative of violence has a clear appeal to the disaffected looking for some kind of heroic way out of their dead-end lives. The second group is known as Salafists; they share much of the millenarian credo of the terrorists - but they are non violent. They advocate the withdrawal of believers from any non-Islamic political structures. Salafists are much more numerous than the terrorists, with a lot of strength in Egypt and Tunisia, but their doctrines of withdrawal reduce their political weight. Some politicians have tried to play them off against the terrorists, since they are able to argue the case for non-violence from a Wahhabist perspective. But this serves to entrench the basic, and socially corrosive, ideas of Wahhabism.
The critical question is whether orthodox Sunnis can organise themselves into putting together a vigorous, international counterattack on Wahhabism, and to win back the battle of ideas. The hope is that a confident, cosmopolitan orthodoxy can be established that offers a middle way between a godless materialism that denies Islamic heritage, and the backward looking ideas of Wahhabism. This seems to be what Mr Mughal was advocating.
But such a Counter Reformation faces formidable challenges. The first comes from political power. One group that would love to promote such a "respectable" version of Islam are the military backed regimes of Arab countries, like Egypt. And yet the incompetence and corruption of these regimes is one of the things that gives the Wahhabist creeds a lot of their appeal. Any Counter Reformation has to keep its distance from such willing official sponsors. Another challenge, of course, is the rejection of Saudi sponsorship; we may hope that low oil prices will reduce this malign influence.
But the biggest challenge surely is to develop ideas that are compatible with the modern, cosmopolitan world. This means rejecting the paternalism of the current order -allowing young people more freedom to consort with the opposite sex and choose their own marriage partners, and to offer women more freedom and power all round. To say nothing of more tolerant attitudes to gay sex. This is a huge jump for many, older Muslims. To them the paternalist ways are something worth fighting for, and their religion is bulwark against dissolute modern ways.
Is their anything to learn from what has happened to Christianity? In Europe established churches are fighting a losing battle with materialism. They cannot find a viable middle way between an empty modernism and being perpetually behind the Zeitgeist. They remain the standard bearers for socially conservative values - which is perhaps why they have a strange obsession with sexual morals. This has parallels with modern Islam.
Still, in America it is a different story. Somehow American churches are able to find compatibility between traditional beliefs and the modern world. We may associate them with conservative strictures on abortion and gay sex, but they have moved on in the question of love and marriage, and the empowerment of women. American churches are fragmented and highly competitive. They have no choice but to adapt to the modern world, or else they will lose out to neighbouring churches, constantly juggling a mix of social conservatism and modern values. To my knowledge Muslim imams and mosques haven't taken on such a competitive approach - but I don' think there is any institutional barrier to it. This bottom-up way offers more hope, surely, than some kind of top-down institutional one based on learned scholars and high level conferences.
But, assailed by an ultimately futureless and destructive Wahhabism on one side, and the temptations of godless materialism on the other, orthodox Sunni Islam must change itself somehow.