SIMI VALLEY, California—Some GOP leaders are pushing to cut aid to Ukraine, but you wouldn’t know it from the crowd at the ...

But in each of those areas, adversaries and would-be adversaries are taking escalatory actions. On Sunday, the U.S destroyer ...

The group, called CyberAv3ngers, is backed by the Iranian Government Islamic Revolutionary Guard Corp., according to a joint alert issued Dec. 1 by the Cybersecurity and Infrastructure Security Agency ...

Recall, of course, that the Houthis have been supported by Iran for many years. CENTCOM officials said they “have every reason to believe that these attacks, while launched by the Houthis in Yemen, ...

As Ukraine leans on suicide drones to wear down Russia’s invading forces, private, civilian-run training schools are working to supply the Ukrainian army with thousands of pilots. That’s no mean feat.

Putin delivered that message again in a speech Tuesday at an event known as the World Russian People’s Council. By his way of ...

For the past two years, Anduril Industries has been secretly building what executives say is a first-of-a-kind, turbojet-powered craft that can down incoming drones or missiles, perform reconnaissance ...

After a weeklong pause, Israel’s war with Hamas has resumed as more rockets arc toward Israel and more airstrikes pound ...

A congressional panel highlights its concerns about infrastructure, the industrial base, keeping up with Russia, and staying ahead of China.

The first-of-its-kind international effort aims to set standards for cybersecurity in artificial-intelligence software.

The Homeland Security Department is already putting artificial-intelligence tools to use—largely against AI-powered threats.

The U.S. Navy shot down what it says was an Iranian-made drone launched from Yemen on Wednesday. The drone, a KAS-04 unmanned aerial vehicle, came from “Houthi-controlled areas of Yemen” and toward ...