Why are newly released Biden audio tapes drawing fresh scrutiny? Classified document remarks and memory lapses explained

Newly released audio from 2017 interviews with ghostwriter Mark Zwonitzer shows Joe Biden discussing classified documents and struggling to recall details.

The tapes were obtained by the House Judiciary Committee and the Oversight Project after a two-year court battle.

In one excerpt, Biden says he 'found all the classified stuff downstairs' in 2009; in another, he warns Zwonitzer that some material 'may be classified.'

Large sections of the recordings remain redacted because they contain classified information.