The team led by U.S. President Donald Trump's national security adviser, Mike Waltz, set up at least 20 group chats on the ...

Why was the national security adviser doing the tedious administrative work of setting up a chat group that should have been ...

The national security adviser's use of the messaging app is under scrutiny after he mistakenly added a journalist to a ...

The fallout continues following Jeffrey Goldberg's report that top members of President Trump's national security team ...

A dozen current and former officials confirmed that the encrypted messaging app is used across various agencies — despite ...

It’s a more extensive use of the app than previously reported and sheds new light on how commonly the Trump administration’s ...

This reveals a greater use of the app than previously known and highlights the extent to which the Trump administration’s ...

Four sources tell Politico they were aware of at least 20 chat groups, all four confirmed sensitive information was discussed ...

The Trump administration wants to move on but I want answers. We deserve to know how this happened.

The White House has declared the controversy around a Signal chat for a military strike that inadvertently included a ...

Less than two weeks ago there was SignalGate, the Trump administration’s national security scandal that potentially ...

It was an unfiltered glimpse into how American power now communicates, coordinates and sometimes confuses itself.