I don't have specific knowledge of the contents of the documents, but I will tell you right now that this is related to North Korea. Our foreign adversaries may or may not already have this specific information, but they are all on the side of North Korea.
Further, the leaks to a friendly newspaper is an example of how the DOJ is being weaponized to harm Biden's political opponent. The purpose of the DOJ is to seek justice, and leaking information to the press is not in the interest of justice.
There's a bunch of speculation that they're likely related to Iran. In the infamous photo, one of the dates is visible on a folder and it's the day or day after Trump pulled out of the Iran Nuclear deal. That kind of information would be very valuable to someone with business interests in Israel or Saudi Arabia. Who knows though, Trump stole a shit load of documents, might be both North Korea and Iran.
By the way, did you know Netanyahu has been friends with Trump for decades and used to live in Trump Tower in NYC?
By the way, did you know Trumps son in law received a $2 Billion (with a B) investment from Saudi Arabia just months after his time as a Senior White House Aid that focused on foreign policy in the middle east ended?
I don't think there is any question about the Biden administration's right to access the documents in question. They don't.
So, if Trump wins in 2024, does Biden get to take whatever documents he wants from any intelligence agency and keep them in his basement in Deleware? And, even if they are extremely sensitive documents that are vital to National Security, Trump will have no right to access them?
Did Obama have the same power to do that as he was leaving office?
Would you defend Obama or Biden if they stole a bunch of documents and Trump, while president, tried to get them back?
Of course not. Don't be silly. Government records belong to the government. The President works for the government, doesn't own it, and isn't above the law. Trump was not a King. (and he isn't one now either)