How did two old, unpopular men end up running for the world's most demanding job? It’s the question John Prideaux, The Economist’s US editor, gets asked the most. And the answer lies in the peculiar politics of the baby boomers.  Since 1992, every American president bar one has been a white man...

Narendra Modi is one of the most popular politicians on the planet. India’s prime minister is eyeing a third term atop the world’s biggest democracy.  A tea-seller’s son, Mr Modi began life an outsider and the man behind the political phenomenon remains hard to fathom. India has become an...