Los Angeles County and the W.H.O. warned that even immunized people should wear masks indoors. Some scientists agreed, but urged a localized approach.

Residents cheered on the streets of Mekelle, Ethiopia, after rebels retook control of the city from government forces. Ethiopia’s government had occupied the region for months, with reports of atrocities against civilians, including sexual violence and arbitrary killings.

Some Asia-Pacific countries lock down.

Feeling victorious, the rebels say they will not be safe until they track down the forces that invaded them. But Tigray faces a host of crises immediately, including famine.

Aid workers are concerned about a potential new wave of atrocities as Ethiopian and Eritrean forces withdraw from Tigray.

The legislation would scrap a requirement that Afghans applying for Special Immigrant Visas undergo a medical examination in the country, allowing them to do so after entering the United States.

With a bigger humanitarian disaster looming, diplomats are trying to keep a Tigrayan victory from becoming a wider war.

With the main allied military air base about to close, negotiations are underway with Turkey about continuing to secure the civilian airport as the Taliban advance across the country.

Former South African President Jacob Zuma was sentenced to prison by South Africa’s highest court for financial scandals committed during his time as president from 2009 to 2018.

Officials for the United Nations refugee agency and World Health Organization expressed concern over the escalating challenges of delivering food and aid in Ethiopia’s Tigray region, which faces famine and high risk of disease outbreaks.