The Donald Trump aide who has been purportedly identified as having witnessed the former president's classified documents in Bedminster, NJ, could "shed light on" exactly what he was holding in the now-infamous recording discussing military operations in Iran, making her testimony critical to Jack Smith's case, according to a former federal prosecutor.

Former federal prosecutor Shan Wu appeared on CNN Saturday and was asked about Susie Wiles, one Trump ally who was reportedly in the room when the audio was recorded. The host said it's not clear whether Wiles could be the source of the leak of that episode, and asked how else that Smith' prosecutors could have been clued in.

"It is hard to know. They may have been interviewing multiple people for it," Wu said, before discussing the importance of Wiles' testimony.

"Someone like her, it is so critical because she could shed light on what it was that Trump was rustling around in his hands and what he was saying about it," Wu added. "And if she got to see it, that will be significant evidence against him with mishandling national security information."

This information would be important in part because Trump has claimed he only had "newspaper clippings" and "building plans" during the recorded interview.

The host noted that Wiles has been travelling with Trump, and that she hasn't "fallen out of favor" yet.

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