In a new tell-all book by former Defense Secretary James Mattis, he gives a glimpse into why he was fired under the Obama administration.

Mattis wrote that he criticized the administration for its weak response to the growing threat of Iran.

One bombshell he speaks on in the book is Obama’s listless response to what Mattis refers to as an “act of war” by Iran, which was a planned bombing of a café in Washington, D.C.

According to The Daily Wire,

Mattis claims in his book, Call Sign Chaos: Learning To Lead, that Obama fired him because of these warnings, and that the administration didn’t even tell him about the Iranian plot to bomb the café. Mattis was informed of the plot by a duty officer in Tampa, Florida, who told him then-Attorney General Eric Holder and then-FBI Director Robert Mueller (yes, that Robert Mueller) held a press conference announcing the arrest of two Iranians who had planned the attack on Café Milano. The Examiner describes the café as “a high-end restaurant in Washington that was a favorite of the rich and famous, including Saudi Arabia’s ambassador, Adel al-Jubeir.”

“Attorney General Eric Holder said the bombing plot was ‘directed and approved by elements of the Iranian government and, specifically, senior members of the Qods Force.’ The Qods were the Special Operations Force of the Revolutionary Guards, reporting to the top of the Iranian government,” Mattis writes in his book.

Mattis also goes on to describe Tehran’s approval of the operation:

“Had the bomb gone off, those in the restaurant and on the street would have been ripped apart, blood rushing down sewer drains. It would have been the worst attack on us since 9/11. I sensed that only Iran’s impression of America’s impotence could have led them to risk such an act within a couple of miles of the White House. Absent one fundamental mistake — the terrorists had engaged an undercover DEA agent in an attempt to smuggle the bomb — the Iranians would have pulled off this devastating attack. Had that bomb exploded, it would have changed history.”