N.S.A. Lost Access to Powerful A.I. Model Amid Anthropic Dispute

A recent episode underscored the Trump administration’s increasing reliance on advanced A.I. systems for cybersecurity even as it battles a leading U.S. developer.Defense Secretary Pete Hegseth has labeled Anthropic, the maker of Mythos 5, a supply chain risk.

D Dustin Volz and Julian E. Barnes

Photos Behind Kennedy Center Tarps Show No Sign of Trump’s Name

Images circulated by an activist group reveal bare marble where President Trump’s name once resided. The Kennedy Center previously told a federal judge it had been removed.In a sworn declaration this month, the Kennedy Center said it had removed the words “The Donald J. Trump and” from its facade.

J Julia Jacobs

Protesters Accused of Antifa Ties Sentenced to Up to 100 Years in ICE Attack

The penalties, issued in an attack where a police officer was shot, dwarfed those given to Jan. 6 rioters and appeared to signal that at least some courts will deal aggressively with ICE protesters.The attack took place last year outside the Prairieland Detention Center in Alvarado, Texas.

A Alan Feuer and Krista Torralva

Senate Votes to Direct End to Iran War, Rebuking Trump on War Powers

A few Republicans joined Democrats in favor of a measure instructing President Trump to halt military operations against Iran or seek congressional authorization.The Capitol seen on Tuesday. The vote came amid tensions over the war among the G.O.P., which faces a punishing political environment ahea

R Robert Jimison

China Takes Supercomputer Crown From U.S. For First Time Since 2017

A supercomputer in Shenzhen was declared the world’s fastest. It uses only standard microprocessors and not the special-purpose chips called graphics processing units.China’s National Supercomputing Center in Wuxi in 2020. LineShine, a supercomputer in Shenzhen, has been declared the world’s fastest

D Don Clark

Supreme Court Sides With Exxon in Lawsuit Over Assets Seized by Cuba

The Trump administration backed Exxon Mobil’s effort to be compensated for oil and gas assets confiscated by the Cuban government in 1960.Exxon sued three companies owned by the Cuban government that it said have been exploiting its stolen refineries and service stations without compensation.

A Ann E. Marimow

Britain Is Still Deep in the Shadow of Brexit

Ten years after a slim majority voted to leave the European Union, the economic and political effects of that decision continue to disrupt the United Kingdom.A “Vote Leave” rally in London in June 2016. The proposal to separate from the European Union narrowly passed.

M Michael D. Shear and Megan Specia

Brexit Has Cost the UK Growth, Analysts Say, in the Decade Since the Vote

Citing lower trade and investment, analysts broadly agree that Britain’s economy is smaller than it would have been if the country had stayed in the E.U.Ten years ago, British voters approved by a slim margin a proposal for the country to leave the European Union. The economic results, economists sa

E Eshe Nelson

How Trump Turned America’s Refugee Program Into a Pathway for White People

President Trump has created an exception to his refugee ban for white South Africans, reshaping a program intended for people fleeing persecution and disaster.A white South African, Charl Kleinhaus secured refugee status and moved with his family to the United States in a matter of months.

Z Zolan Kanno-Youngs and Hamed Aleaziz

A Look Inside the Welcome Bags Planned for White South African Refugees

The United States is putting together bags with a children’s book on so-called reverse racism, and with a document that defends the country’s founding on the basis of slavery.Afrikaner refugees from South Africa arriving at Dulles International Airport in Virginia last May.

H Hamed Aleaziz and Zolan Kanno-Youngs

Meta Has Created a Prediction Markets App

The experimental app, internally called “Arena,” would be independent of Facebook and Instagram. It could compete for attention with Polymarket and Kalshi, the biggest prediction markets.Mark Zuckerberg, Meta’s chief executive, is making a broader push to create new types of apps based on emerging s

M Mike Isaac and David Yaffe-Bellany

Markets Recoil in Global Sell-Off Driven by Tech Stocks

Chipmakers led the way down in South Korea, where the main index plunged 10.5 percent. The Nasdaq in the U.S. was down 2.2 percent at Tuesday’s open.Traders in Seoul. The decline in South Korean stocks on Tuesday at one point triggered a 20-minute trading halt by the exchange operator.

D Daisuke Wakabayashi, Jason Karaian and Aruni Soni

Looking Back on the U.S.A.’s Many Founders, 250 Years In

In the past 50 years, the way we tell the story of the Revolution has become dramatically more complex. Can it still inspire us all?The five-man drafting committee presenting the Declaration of Independence to Congress, in an early 19th-century painting by John Trumbull.

J Jane Kamensky