CNN, audio with Trump discussing secret file taken away

Federal prosecutors obtained an audio recording of a summer 2021 meeting in which former President Donald Trump acknowledges withholding a confidential Pentagon document about a potential attack on Iran, several sources told CNN, undermining his claim that he declassified all documents seized by the FBI at his Mar-a-Lago residence. The audio would indicate that Trump is aware that he kept classified material after leaving the White House, according to CNN. In the recording, Trump's comments suggest he would like to share the information, but he is aware of the limits to his powers to declassify documents after the presidency, according to two of the sources.
CNN did not listen to the recording, but one source said the relevant part of the Iran document was about two minutes long, while another source said the discussion was a small part of a much longer meeting.
Prosecutors have already heard as a witness General Mark Milley, at the time chairman of the Joint Chiefs of Staff, then the Trump administration's top national security official.
The meeting in question dates back to July 2021 and was held at Trump's golf club in Bedminster, New Jersey, with two people who worked on the autobiography of Trump's former chief of staff, Mark Meadows, as well as with employees of the former president, including communications specialist Margo Martin. The participants, according to the sources, did not have security clearances allowing them to access confidential information. Meadows did not attend the meeting, according to the same sources.
Meadows' autobiography includes an account of what appears to be the same meeting, during which Trump "recalls a four-page report typed by Mark Milley himself. It contained the general's plan to attack Iran, deploying huge numbers of troops, a plan that Milley urged President Trump to implement more than once during his presidency. The document Trump refers to was not produced by Milley, CNN reported.