GZERO World: How Booze Helps Get Diplomacy Done

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Why do (most) world leaders drink together? It can get them to agree on stuff they wouldn't while sober. Booze "helps people get cooperation off the ground, especially in situations where cooperation is challenging," says University of British Colombia professor Edward Slingerland. Alcohol, he explains, allows you to "see commonalities rather than just pursuing your own interest," which may put teetotaler politicians — like Donald Trump — at a disadvantage.