A fight over Pentagon contracts shows how the leaders of Silicon Valley’s two most important A.I. start-ups are feuding over the future of the tech industry.

Negotiations, threats and amended contracts have left plenty of questions. Here are some answers.

For the past two decades, Bolivia resisted U.S. influence. A rightward shift is reorienting the country’s president toward Washington.

Some residents in the Manhattan neighborhood are fighting the construction of two apartment towers, which could rise up to 19 stories on the site of a parking lot.

President Trump, who values loyalty, has at times tried to distance himself from his administration’s own actions when they become politically toxic.

The Trump administration had signaled earlier this week that it was ready to abandon four executive orders seeking to punish law firms, but abruptly reversed course the next day.

What had been a safe G.O.P. seat was looking more attainable for Democrats after Representative Tony Gonzales bowed out in favor of a hard-right candidate.

Rama Duwaji, Mr. Mamdani’s wife, had liked Instagram posts related to the Hamas-led attack on Israel on Oct. 7, 2023.