The White House’s move is part of a nascent campaign to inoculate the world, and came as President Biden faced intense pressure to do more.

Eight of the 10 countries with the highest rate of Covid deaths per capita rate are in Latin America and the Caribbean, where vaccines are sorely lacking.

The Pentagon is considering whether to intervene with warplanes or drones in the event that Kabul is in danger of falling to the Taliban, though no decisions have been made.

The action invokes provisions of the new North American trade accord.

The new order calls for a broader review of a number of foreign-controlled applications that could pose a security risk to Americans and their data.

A global partnership announced plans to spend more than $5 billion to eradicate poliovirus.

Fully vaccinated Canadians — of which there are relatively few — will be able to skip a mandatory hotel stay when they get back home, but no firm date has been set for the change.

The new order calls for a broader review of a number of foreign-controlled applications that could pose a security risk to Americans and their data.

In his first overseas trip as president, Mr. Biden said no nation can solve its problems alone, and that democracies must prove that their way is better than autocracy.

Biden’s high-stakes trip to Europe.