Scattered reports of blood clots have sparked curbs across Europe, even though the jab is almost certainly safe. We take a hard look at the risks in relative terms. After Canada arrested a Huawei executive in 2018, China detained two Canadians—we examine the hostage diplomacy still playing out. And how “non-fungible tokens” may benefit digital artists of all sorts. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer
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