When airpower wins, and when it doesn’t.

Russia has reaped a diesel deal and an increase in U.S. pressure on Ukraine as President Trump’s political needs align with his longstanding inclinations toward Russia.

As the U.S.-Israeli war with Iran continues, it’s being felt in a wider region. Eric Schmitt, a national security correspondent at The New York Times, explains how the conflict is reaching U.S. bases ...

The dangerous idea driving today’s wars of choice.

The withdrawal came with unusual speed, following what U.S. officials said were threats of an Iran-based plot against the installation.

President Trump made the offer to Xi Jinping, China’s leader, said David Perdue, the ambassador to China. The White House later said the U.S. had no plans for such a sale.

With the addition of 29 U.S. sailors and eight Marines, the total number of personnel wounded since the start of hostilities has risen to 861, a Pentagon database shows.

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It is, unfortunately, the wrong question.

What Is Important About This Operation

Our photographer Chang W. Lee describes how he took the picture of the north tower of the World Trade Center collapsing on Sept. 11, 2001.

Pressure and pain won’t sap Russia’s resolve in Ukraine.

The oligarch, Umar Kremlev, spent hundreds of thousands on expenses like renting out a private island. He appears to have met Trump Jr. only recently, but he attended the intimate wedding with a large...

More And More This Looks Like The End Of An Era; China And Russia Must Be Loving This

The attack by an aggressive “collective” of OpenAI agents shows the danger of artificial intelligence systems that organize themselves.

Russia is learning how to restore command, targeting and sustainment after disruption. NATO should measure success by how long the military function stays unavailable.

Going without notice until they are not there, batteries are increasingly critical to Defence, but a steady supply is far from assured.

Iran is expected to receive within weeks a first shipment out of up to 400 Chinese-made shoulder-fired air-defence missile launchers, three sources familiar with the deal told ​Reuters, as it rebuilds...