The president has often been guarded about even the most basic information about his health.

© Eric Lee/The New York Times

The “free speech” champion Mark Zuckerberg tries to shut up a critic.

“Careless People,” a memoir by a former Facebook executive, portrays feckless company leaders cozying up to authoritarian regimes.

The journalist Fareed Zakaria discusses the worldview emerging from Trump’s foreign policy decisions regarding Ukraine, Gaza, China and beyond.