Joe Biden and Vladimir Putin have much to hammer out today—but don’t expect it to be genial. We examine what is on the table, and how each president will be judged. Competition in the cryptocurrency world is mushrooming; we ask whether any contender might knock bitcoin off its top slot. And France’s curious sell-now, die-later property scheme. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer
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