The West is failing to learn its lesson from the fight against Isis

The last Isis-held town in Iraq, Rawa, has fallen; across the border in Syria, the Russians declared a ‘total rout of the terrorists’. But this tough fight, which has taken three-and-half years, could all be in vain: the coalition which has driven Isis out now faces the gloomy prospect of winning the war and losing the peace. While Isis has been defeated, the next big challenge – how to address the Iranian drive for dominance in the Middle East – goes unanswered.