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

How does a single missile unleash multiple nuclear warheads on different targets? MIRVs (Multiple Independently Targetable Reentry Vehicles) are one of the deadliest weapons ever developed. In this ...

Flames are still raging inside the Chernobyl nuclear station after multiple fires yesterday. Three smoldering fires were ...

NBC News' Garrett Haake has details on the firing of multiple staff members from the National Nuclear Safety Administration within the Department of Energy.