Former national security officials reacted with shock and horror to revelations in The Atlantic that top members of President Donald Trump’s Cabinet sent detailed operational plans and other likely highly classified information about US military strikes on Yemen to a group thread on a messaging app to which a reporter had accidentally been added.

The NSC said it was looking into how a journalist was added to the group chat that included the Defense Secretary, Vice President, and other top officials.

The Trump administration is facing political uproar after the White House confirmed that a journalist was inadvertently added to an unsecure group chat in which US national security officials planned a military strike in Yemen.