The dramatic arrest of Jimmy Lai, a pro-democracy newspaper owner, reveals just how enthusiastically Beijing’s new security law will be deployed to quash any dissent. A reservoir is filling behind an enormous new dam in Ethiopia—and that has soured relations with Egypt downriver. And why Britain’s “urban explorers” may soon have far fewer derelict buildings to conquer.For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer
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