While the 17th century was the dawn of an age of secularisation, the 21st century will be the start of an age of desecularisation. Worldwide, religious groups have the highest birth rates. Over the next half-century, there will be a massive transformation in the religious make-up of much of the world, with Europe leading the way. With the sole exception of the United States, the West is failing to heed the Darwinian imperative of passing on its genes to the next generation.
In a world of declining superpowers, sclerotic international institutions, a swathe of failed or failing states and a Hobbesian chaos of civil and tribal wars, religious extremists are seizing power. This means that we have little choice but to re-examine the theology that leads to violent conflict in the first place. If we do not, we will face a continuation of the terror that has marked our century thus far, for it has no other natural end.