Brenton Tarrant pleaded guilty in March after murdering 51 people and wounding 40 at two mosques in Christchurch, New Zealand. But the final phase of the case presents a series of challenges.

Thousands of people packed together at a party in Wuhan, China, this month. In the city where the coronavirus emerged eight months ago, virus transmission is near zero.

Instead of mass-casualty attacks, the Taliban are carrying out targeted assaults in the capital and neighboring districts. The country’s security forces seem unable to control them.

President Trump is expected to announce an emergency authorization of convalescent plasma, which the F.D.A. delayed last week. Florida and Texas cases pass 600,000, following California. Life in China is returning to normal.

In Tropical Far North Queensland, the coronavirus pandemic can seem worlds away, until the veneer of normality crumbles.

More than 50 news media websites have been blocked and two major newspapers have been closed as a government under fire sought to control the message.

Marco is expected to become a hurricane on Saturday and Laura is forecast to produce heavy rain over several Caribbean islands.

Russia’s most prominent opposition leader, Aleksei A. Navalny, arrived in Berlin for treatment after entering a coma in what his family and supporters suspect was a deliberate poisoning before nationwide elections.

Roberto Macías is invoking a new European Union law protecting whistle-blowers to argue that he should not have been convicted after exposing corruption in Spain.

Prosecutors said he provided classified information to Russian intelligence operatives for years, betraying the United States.