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b'Democrats will have a bit more breathing room in the Senate, with an outright majority provided by Reverend Raphael Warnock\\u2019s win. We ask what the state-level victory reveals about national politics. Algeria\\u2019s leadership has benefited from an oil-and-gas boom; lamentably, its long-suffering citizenry has not. And why an artificial intelligence success at the game Diplomacy is significant. Help us make the show better: take our listener survey at http://economist.com/intelligencesurvey For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer

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