When Bilal Berjawi spoke to his wife for the last time, he had no way of being certain that he was about to die. But he should have had his suspicions. A short, dumpy Londoner who was not, in the words of some who knew him, one of the world's greatest thinkers, Berjawi had been fighting for months in Somalia with al-Shabaab, the Islamist militant group. His wife was 4,400 miles away, at home in we
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