Add Yahoo as a preferred source to see more of our stories on Google. Highly sensitive attack plans on Iranian-backed militants in Yemen were seemingly accidentally shared with a journalist as they ...

When top White House defense and national security leaders discussed plans for an attack on targets in Yemen over the messaging app Signal, it raised many questions about operational security and ...

The Trump administration is facing heavy blowback for using Signal, a messaging app, to discuss sensitive military plans. On March 24, officials’ usage of the app was revealed after The Atlantic ...

In 1900, the Signal Corps began building the Washington-Alaska Military Cable & Telegraph System to provide basic communications to the area. The completion of the Alaskan Cable System in 1904 was ...

When top White House defense and national security leaders discussed plans for an attack on targets in Yemen over messaging app Signal, it raised many questions about operational security and ...