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Across the Mediterranean and beyond, flames are consuming the landscape. Our correspondent says Turkey\u2019s government helped make the country a tinderbox and was caught flat-footed by the blaze. State secrets, business intelligence, even conservation data: it\u2019s all online, and freely available. We examine the pros and cons in an era of open-source intelligence. And the \u201cmurder hornet\u201d threatening America\u2019s north-west.

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