Markus Lange / Robert Harding / Newscom
Adultery can be both a cause and a consequence of a failing marriage.
Jonathan Ernst / Reuters
The summit opens with a sense of optimism, but it should be cautious optimism that prevails.
OTTO DETTMER/THE ECONOMIST
Barely over a tenth of Trump voters think his policies have changed for the worse.
'Populism exists because institutions are elite-driven,' but democracies don’t work well without elites, says the acclaimed author of The End of History.