“How much of this shit do we have to listen to?” Trump said he asked. “How much are we going to listen to?”

The speech was not open to reporters but CNN obtained a recording of Trump’s remarks at Mar-a-Lago, which it said undermined official explanations for the decision to kill Suleimani at Baghdad airport on 3 January.

The White House has claimed Iran posed an “imminent” threat to US interests and lives. Trump’s own statements, including the claim that four embassies were threatened, have muddied the water considerably.

He has also claimed “it doesn’t really matter” whether the attack was imminent or not or whether his advisers were in agreement, because of “the terrorist” Suleimani’s “horrible past”.

Congress was not informed of the strike in advance, its eventual notification was heavily classified and a congressional briefing prompted bipartisan protest. Democrats have proposed legislation to rein the president in.

The death of Suleimani prompted Tehran to launch retaliatory rocket strikes on US targets in Iraq. Having said no one was hurt, the Trump administration said on Friday 11 US service members in fact suffered blast-related concussions.