Ukraine is a beta test for embedding artificial intelligence and other new technologies in drones and robots to find deadly land mines, saving lives and allowing military forces to advance more quickly.

Twitter Blue, a revamped subscription service that let users buy verified badges, was the first big test for the platform’s new owner. It didn’t go well.

The Raiders and the Warriors are gone and the A’s are leaving, but teams in lesser-known leagues are trying to fill the void and connect with the city.

Mexico’s next leader, Claudia Sheinbaum, is a climate scientist who has signaled a clean energy pivot. But a huge wager on fossil fuels by her political mentor stands in her way.

These moms have found a community while picking up the sport, falls and all.

The tennis tournament, like the rest of New York City, is adapting to climate change.

Robert F. Kennedy Jr., who suspended his independent presidential bid earlier on Friday, was embraced by Donald J. Trump at a rally in Arizona. But the union’s political impact remains unclear.

Former President Donald J. Trump talked policy in Las Vegas and seemed almost chipper. In Arizona, he reveled in the endorsement of a former campaign rival, Robert F. Kennedy Jr.

In Ein al-Hilweh, Lebanon, long mired in poverty and despair, Hamas recruitment is up and the downtrodden air has given way to defiance and celebration.

Most people in Cambodia are under 30, born long after the horrific rule of the Khmer Rouge. A bus is touring the country to make sure it’s not forgotten.

Convenience stores are a part of the country’s culture, meaning that the foreign buyout bid for 7-Eleven, the largest chain, could be a hard sell in Japan.

American officials are not convinced that Ukraine intends to hold its position in Russia long term.

Ukraine struck a port across from Crimea and damaged a cargo ferry. But Kyiv’s forces continued to struggle in eastern areas under a relentless Russian assault.

Jerome H. Powell made it clear that the Federal Reserve will cut rates on Sept. 18, as the central bank turns the corner in its fight against inflation.

After accepting the nomination, Ms. Harris was flying back to Washington on Friday for a weekend respite before returning to the campaign trail next week.

The new Biden administration initiative, which could put many undocumented spouses of Americans on a path to U.S. citizenship, began taking applications this week.

American-led mediators secured famine relief for needy areas. But with Sudan’s military failing to attend, a cease-fire was far out of reach.

Jack Smith, the special counsel, is said to be leaning against requesting a public courtroom hearing where he could broadly set out the evidence that the former president sought to overturn the 2020 election.

Also, Powell said the “time has come” for interest rate cuts. Here’s the latest at the end of Friday.

Mediators in truce negotiations, including the C.I.A. director and President Biden’s Middle East envoy, are seeking a summit next week to keep the struggling talks alive.