Sue Gordon, former principal deputy national intelligence director, said the Trump administration needs to deal with any "persistent risk" to communications following the Signal chat leak.

Lawmakers and legal experts claim the Yemen Signal group chat ‘blatantly violated security regulations designed to prevent exactly this kind of leak’ ...

The Signal group chat leak continues to make headlines ... in our military leaders and there have been calls for resignations. What are the implications of this leak, from an individual level with ...

Nahal Toosi is POLITICO’s senior foreign affairs correspondent. She has reported on war, genocide and political chaos in a career that has taken her around the world. Her reported column, Compass, ...

Journalist added to Signal group chat with ... While the leaked details about the planned strikes did not necessarily compromise the mission, Newton said there were broader implications of ...

President Trump suggested Wednesday that the Signal messaging platform his top national security brass used to discuss the Houthi strike may be “defective.” While defending Defense Secretary Pete ...

But the Trump administration has tried to divert or sidestep the issues ... What the Leak Revealed: Our reporters discuss what the Signal chat leak revealed about the Trump administration ...

US Defence Secretary Pete Hegseth is facing a fresh legal trouble after Pentagon school students have filed a lawsuit against ...

On Tuesday, Trump revealed that a staffer with national security advisor Mike Waltz's office included the editor-in-chief of the Atlantic in a Signal group chat with senior Trump officials who ...

CIA Director John Ratcliffe, who was on the leaked Signal chat, defended the use of the platform during testimony before the Senate Intelligence Committee on Tuesday, claiming that he was told “ ...