Classified documents discussed by Trump on leaked audio reveal Mark Milley had plan to attack Iran: report

A new report out from CNN states that federal prosecutors for the DOJ possess a recording that shows former President Donald Trump speaking candidly about "a classified Pentagon document about a potential attack on Iran." 

CNN is primarily interested in what the existence of this recording means in terms of the DOJ case against Trump.

Many past presidents, including Barack Obama, have retained classified documents for the purpose of writing books, as was done in this case. The book in question for which the materials were sourced was that of Trump's Chief of Staff Mark Meadows.