Speaking to reporters from the Oval Office, the president focused on the successful U.S. airstrikes in Yemen more than the discussion of military plans in a commercial messaging app where a journalist was invited by mistake.

The US version of GCHQ, the National Security Agency, issued a document on February 25 headlining "Signal Vulnerability" - weeks before Donald Trump's 'Chatgate'

Political fallout is mounting as some Republicans are breaking with the White House on the severity of the leak.

President Trump told NBC News he would not fire anyone involved in a group chat that inadvertently disclosed plans for U.S. airstrikes to a journalist. He also said he “couldn’t care less” if car prices rise because of tariffs,

US President Donald Trump and his intelligence chiefs have played down a security breach that saw a journalist invited on to a Signal group chat where he reported ... who was at the centre of the leak. The president stood by him and insisted the incident ...

The attempts by President Donald Trump and top leaders of his administration to downplay a security breach that revealed military strike plans in a Signal group chat including a journalist stand in stark contrast to their reaction to Hillary Clinton's use of a home server as secretary of state.

The White House continued to downplay the seriousness of the incident, parsing semantics and attacking the journalist who was inadvertently added to the chat.

Democrats and liberal groups have a long history of touting the use of Signal before the Trump administration's Signal chat leak with the editor-in-chief of the Atlantic.

A tweet from National Intelligence Director Tulsi Gabbard has resurfaced following a leaked Signal chat that discussed military plans in Yemen.

After the revelation that he was part of a secret chat, Vice President JD Vance’s focus wasn’t on the security breach. Instead, it seemed to be concern that he had questioned his boss.