Author: Josh Meyer and Tom Vanden Brook, USA TODAY

If Pentagon leak suspect Jack Teixeira was a known danger to the public, experts are asking, why did he get a top-secret security clearance?

Leaked Pentagon documents appear to be highly sensitive reports related to the war effort in Ukraine, including data on U.S. military activities.

China’s high-altitude surveillance balloon flew over sensitive U.S. missile and nuclear weapons sites, the House Intelligence Committee chair says.