Trump Orders U.S. Agencies to Stop Using Anthropic AI Tech After Pentagon Standoff

The company had clashed with the military over how officials wanted to use its cutting-edge A.I. model. The order could vastly complicate intelligence analysis and defense work.“In a narrow set of cases, we believe A.I. can undermine, rather than defend, democratic values,” Dario Amodei, the chief e

J Julian E. Barnes and Sheera Frenkel

Pentagon-Anthropic Standoff Is a Decisive Moment for How A.I. Will Be Used in War

The Pentagon’s contract dispute with Anthropic is part of a wider clash about the use of artificial intelligence for national security and who decides on any safeguards.The Pentagon has said that a private contractor cannot decide how its tools will be lawfully used for national security.

A Adam Satariano, Julian E. Barnes and Sheera Frenkel

Iran’s Students Are Protesting Again. Here’s Why.

The unrest underlines the intensity of domestic discontent, even as Tehran’s government grapples with the threat of U.S. strikes. Here’s what to know.An image taken from social media on Monday shows students gathering for an anti-government rally at the women-only Al Zahra University in Tehran.

S Sanam Mahoozi and Erika Solomon

A Trump Call Ignited Saudi-U.A.E. Feud

A request made to President Trump about the war in Sudan is at the heart of a diplomatic dispute between Saudi Arabia and the United Arab Emirates.President Trump and Crown Prince Mohammed bin Salman of Saudi Arabia at an investment forum in Washington in November.

V Vivian Nereim

4 Takeaways About the U.S. Birthrate Decline

There is good news buried behind the worries about population decline, some experts say.The U.S. birthrate, which is at a record low, has caused consternation among policymakers and politicians.

S Sabrina Tavernise

Neil Sedaka, Singing Craftsman of Memorable Pop Songs, Dies at 86

He sang and co-wrote some of the definitive teenage anthems of the 1950s and early ’60s, including “Breaking Up Is Hard to Do,” and then reinvented his career in the ’70s.Neil Sedaka performing onstage in London in 1977. He intersected in his career with a remarkably diverse array of musicians.

P Peter Applebome

Trump’s Go-To Tactic in the State of the Union

Our reporter Zolan Kanno-Youngs examines the context of a moment in the State of the Union speech when President Trump turned to a favorite tactic on immigration.

Z Zolan Kanno-Youngs, Gilad Thaler, Thomas Vollkommer, Laura Salaberry and Ray Whitehouse

A Laser, a Shutdown of Airspace and Signs of Government Agencies at Odds

After the downing of a Customs and Border Protection drone, the F.A.A. closed the airspace above Texas for the second time in a month.A police officer walked with a police dog at El Paso International Airport, after the U.S. Federal Aviation Administration lifted its temporary closure of the airspac

K Karoun Demirjian, Kate Kelly, Eric Schmitt and Chris Cameron

Victims’ Families Stunned by Failure of Air Safety Bill in House

Relatives of those who died in a midair collision over D.C. last year came to Washington to watch a vote they thought would go their way. It didn’t.Tim Lilley’s son was one of the pilots of American Airlines Flight 5342, which was struck by an Army Black Hawk helicopter above Ronald Reagan National

K Karoun Demirjian

30 More Indicted in Cities Church Protest Against ICE in St. Paul

The newly indicted people join nine others, including Don Lemon, in facing charges in connection to a protest of President Trump’s immigration crackdown during a worship service.Demonstrators were arrested after disrupting a worship service at Cities Church in St. Paul, Minn., in January.

E Ernesto Londoño

What Larry and David Ellison Would Own After Warner Bros. Takeover

If Paramount can close its deal to buy Warner Bros. Discovery, Larry and David Ellison will influence nearly every corner of news, entertainment and tech.Larry and David Ellison are poised to own a portfolio of companies that would put them in the orbit of superpowers like Disney.

J John Koblin and Brooks Barnes

Kamala Harris Endorses Jasmine Crockett in Texas Senate Race

The endorsement from the former vice president, her most significant since leaving office, comes as Ms. Crockett is facing a competitive Democratic primary contest against James Talarico.Representative Jasmine Crockett of Texas at a campaign event last week in Houston.

R Reid J. Epstein and Shane Goldmacher

In Tuesday’s North Carolina Primaries, the Left Is Aiming for Democrats

From a Durham-area House race to three statehouse races, North Carolina liberals are signaling that their tolerance for Democratic stalwarts may be coming to an end.Chandler Roberts, 4, watched his grandfather, Nathan Roberts, fill out his ballot at an early voting site in Charlotte, N.C., amid a fl

D David W. Chen and Eduardo Medina

Henrietta Lacks’s Family Settles Suit With Novartis Over Use of Her Cells

Ms. Lacks’s family accused Novartis of profiting from her cells, which were taken from her without her consent in 1951, when she was dying of cervical cancer.The lawyer Ben Crump, second from left, walking with Henrietta Lacks’s grandsons Ron Lacks, left, and Alfred Lacks Carter, third from left, an

M Michael Levenson

Prosecutors Plan to Drop Some Charges Against Alexander Brothers

Prosecutors cited a pattern of intimidation against witnesses as a reason for dropping two counts from the sex-trafficking case. A judge must approve the dismissal.Federal prosecutors have argued that the three brothers violently raped and sexually assaulted dozens of victims over more than 20 years

D Debra Kamin and Kate Christobek