A watchdog group has said the exchanges on the Signal app were federal records, and sued in an effort to preserve them.

Defense Secretary Pete Hegseth on Tuesday fended off a reporter’s questions about a leaked Signal chat group about forthcoming strikes on the Houthis in Yemen.

National security advisor Michael Waltz commented on the Signal text chain leak during an appearance on "The Ingraham Angle." ...

The Acting Inspector General (IG) of the US Department of Defence (Pentagon) will probe Secretary of Defence Pete Hegseth's ...

A Pentagon-wide advisory that went out one week ago warned against using Signal, the messaging app, even for unclassified ...

Sources tell CBS News the Signal chat involving senior Trump administration officials included sensitive intelligence Israel ...

But the US national security adviser said he could not explain how a journalist was added to a chat discussing air strikes in ...

The Atlantic editor Jeffrey Goldberg says he was included in a private chat about the bombing of Houthi rebels in Yemen.

Sen. Roger Wicker, chairman of the Senate Armed Services Committee, penned a letter seeking an expedited inspector general ...

Military and intelligence experts and some members of Congress have expressed shock over the inadvertent leak, raising questions ... Houthi rebels in Yemen hours before they happened, because he was ...

The White House claimed no classified information was shared in the chat ... can argue the leak meets certain criteria of the Espionage Act. “The operational strike plans for Yemen meet the ...