What makes President Joe Biden? We’re all pretty familiar with Vice President Biden and Senator Biden. But in his latest iteration as commander-in-chief, it hasn’t been as easy to see inside his mind. Cracking into Biden’s brain and inside the White House has been a challenge for the media. He’s surrounded by a tight “clan” of family and advisors who have achieved Biden lifer status — and they don’t often leak. It consists of his sister Valerie, and the five advisers known as the Quint: Steve Ricchetti, Mike Donilon, Anita Dunn, Bruce Reed, and now former chief of staff Ron Klain. It’s been a notoriously tough circle to penetrate. But now one person has done it: Franklin Foer, who spent the last few years inside the heads of Biden and his team and has written the definitive account of President Biden’s first two years in office called “The Last Politician: Inside Joe Biden's White House and the Struggle for America's Future.” The book was originally supposed to be about the first one hundred days. But the story was too interesting to stop. Next, he planned to wrap up after the passage of Build Back Better. The book ended up growing into a two-year project that ends tidily with the midterms. But where the book really shines when it grapples with the core of who Biden is — both psychologically and ideologically. Whether you love Biden or hate him, Frank’s book just might change your mind about how you understand him. On this episode of Playbook Deep Dive, host and Playbook co-author Ryan Lizza sits down with Frank Foer to dig into the revelations that fill the pages of his new book, like how pivotal Biden’s inner circle is to his decision making; his relationship with Ukrainian president Volodymyr Zelenskyy; the low point of the presidency so far; and what’s in store for Biden as he prepares for another run as the oldest sitting president in history.