The room where everything happened

But what he saw there surprised him. He had to learn that Trump is not at all concerned with the good of the nation, but always only with self-dramatization and getting re-elected by any means necessary.
In his book, Bolton gives a first-hand account of Trump's transgressions, his unlawful statements and actions. The president's former national security adviser has exclusive detailed knowledge and insider information regarding the machinations of the most powerful man in the world.
For example, Bolton answers questions about the extent to which Trump manipulates Chancellor Merkel's administration and uncovers numerous top-secret details about Trump's involvement in improper Justice Department investigations. He reveals the juiciest details of Trump's connections to the world's trouble spots, such as Russia, North Korea, and Syria, and gives a detailed account of the Ukraine affair. He shows how Trump tried to denounce his opponents with the help of the Ukrainian president.
Bolton reveals Trump's appalling incompetence on foreign policy and constitutional issues: the president offers his personal services to dictators, praises Chinese internment camps, and considers aloud governing for more than two terms. He does not know that Britain has nuclear weapons and that Finland is not part of Russia. Yes, he is considering leaving NATO and invading Venezuela.
This documentation from the innermost circle of power justifies impeachment proceedings against Trump - which is why the White House tried to prevent its release by all means.