Perhaps Pedro Castillo thought he could repeat the coup staged by his predecessor, Alberto Fujimori, in 1992. He did not, and is now behind bars. We ask how his fitful presidency fell apart so suddenly. Our correspondent explains why getting policy right around e-cigarettes is so tricky. And what the funerals of Kenya’s motorbike-taxi drivers reveal about the country. 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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