Redeploying Homeland Security Investigations agents is part of a broader Trump effort. But some fear many serious transnational crimes will go unprobed.

The National Nuclear Security Administration is a semi-autonomous agency within the Department of Energy that oversees the ...

Only Donald Trump can make the call to launch U.S. nuclear-armed ICBMs. Our reporter visits the subterranean world of the ...

The U.S. Department of Defense’s premier Chemical, Biological, Radiological, Nuclear, Explosives (CBRNE) Command selected a ...

Some of the fired probationary employees included on-the-ground staff at facilities where nuclear weapons are built.

Multiple government officials are telling ABC News that America is now facing a "national security crisis" because President ...

The energy industry in the U.S. is undergoing rapid change, and the needs of “hyperscalers” and others have led to a ...

The United States operates 14 Ohio-class ballistic missile submarines (SSBNs) and four cruise missile submarines (SSGNs). The USS Ohio is the largest submarine the U.S. has ever built, and is capable ...

"Today’s scheduled rotation of the International Atomic Energy Agency (IAEA) team currently based at Ukraine’s Zaporozhye Nuclear Power Plant (ZNPP) was cancelled as a result of intense military ...

Today’s scheduled rotation of the International Atomic Energy Agency (IAEA) team currently based at Ukraine’s Zaporizhzhya Nuclear Power Plant (ZNPP) was cancelled as a result of intense military ...

Ukraine accused Russia on Wednesday of deliberately disrupting rotation of the International Atomic Energy Agency (IAEA) ...

Staffers at the nation's cybersecurity agency, whose job is to ensure the security of U.S. elections, have been placed on ...