The president’s allies have always said that his unpredictability is his superpower, and that it keeps his enemies guessing.

In January, Defense Secretary Pete Hegseth published a memo calling on A.I. to be widely integrated across the military and for A.I. companies to offer their technology without restrictions.

A U.S. military helicopter flying over the Panama-flagged Centuries, which was intercepted in the Caribbean Sea. American officials have suggested that they intend to seize another ship, Bella 1, which they are currently tracking.

The strike, conducted at the direction of Defense Secretary Pete Hegseth, had targeted a boat sailing along a “known narco-trafficking route” in the eastern Pacific.

An oil tanker anchored near the Cardón Refinery in Punto Fijo, Venezuela, in 2021.

Pentagon reporters have had access to the building’s corridors for decades.

Chandler, a military spouse, recently got pregnant through in vitro fertilization, but had to shoulder high out-of-pocket costs because it was not covered through the Defense Department’s insurance plan.

A training event known as “the gauntlet” at the Citadel, the South Carolina military academy, in 2019.

President Trump’s budget proposes deep reductions for nearly ever major federal agency, reserving its steepest cuts for foreign aid, medical research, tax enforcement and a slew of anti-poverty programs.

Defense Secretary Pete Hegseth during a visit to the U.S.-Mexico border this month. He named military operations at the border as an exception to the proposed cuts.

Drone hunting at Island Beach State Park in Lanoka Harbor, N.J.

Elon Musk epitomizes a new generation of tech leaders who often have a right-wing ideology and favor fewer constraints on entrepreneurship.

Defense Secretary Lloyd J. Austin III was admitted to intensive care on Monday. The White House learned of it on Thursday.

At a college fair in Beijing organized by the American Embassy.

The Air Force’s pilotless XQ-58A Valkyrie experimental aircraft is run by artificial intelligence.