White roses, white sheets hung from homes, even white t-shirts: a movement’s symbolic colour was not much in evidence after officials quashed national protests. Part of Saudi Arabia’s plan to wean its economy off oil is to entice lots of tourists; we ask how likely that is to work. And gut bugs beget a bigger bounty of blackcurrant berries.For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/intelligenceoffer
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