The Showman: Inside the Invasion That Shook the World and Made a Leader of Volodymyr Zelensky by Simon Shuster

The author, Simon Shuster, had known Zelensky before the war when he was a comedian and due to their friendship gained access to his inner circle. Shuster spent almost the entire first year of the war with Zelensky and is able to describe how this war had changed him and explain in crazy detail how close Russia was able to get at multiple points early on.