Michael Bloomberg, the billionaire former mayor of New York, has announced he is running for president. But he is late to join the race and not very popular with Democratic primary voters. We also look at TikTok, a wildly successful video-sharing app, that some see as a threat to security in the Western world. And much of Switzerland is up in arms–about the reliability of the country’s coffee supply. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/radiooffer
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