The military on Sunday used live ammunition and tear gas in cities across Myanmar, attacking protesters who have been calling for a return to democracy since a Feb. 1 coup. At least 18 were killed, the United Nations said.

Demonstrators shattered glass and set fires in Barcelona on Saturday. It was the latest in nearly two weeks of protests led by young people opposing the arrest of rapper Pablo Hasél over provocative tweets.

Tom Moore, a 100-year-old World War II veteran, raised millions for Britain's National Health Service during the pandemic by walking laps in his garden. He received military honors on Saturday.

World Health Organization officials again urged that vaccines be distributed equitably worldwide and that the supply for the Covax initiative not be compromised.

On Friday, John F. Kirby, the Pentagon press secretary, confirmed that overnight U.S. airstrikes hit a collection of buildings on the Syrian side of a border crossing with Iraq, targeted at members of an Iran-backed militia and an affiliated group.

Yogananda D. Pittman, acting chief of the Capitol Police, told a House panel on Thursday that officers were unprepared for the scale of the Jan. 6 Capitol attack, and were uncertain of when to use lethal force.

The White House coronavirus task force said on Wednesday that it wants to improve mask equitability by sending more than 25 million masks to vulnerable communities.

In Rochester, N.Y., protests occurred after news broke that no officers were charged with the killing of Daniel Prude. Mr. Prude, a Black man who was having an apparent psychotic episode, died during interactions with the police.

On Tuesday, President Biden and Prime Minister Justin Trudeau of Canada held a joint news conference in which they emphasized working together against climate change.

On Tuesday, the White House press secretary Jen Psaki announced that federal vaccine distribution would increase. Ms. Psaki also said that President Biden would visit Texas to survey a vaccine site impacted by the recent winter storm.