Washington( CNN) James Comey's upcoming volume burst into public view Thursday evening, offering a remarkable look into the former FBI director's relationship with President Donald Trump.

Comey's recollections detail what he calls Trump's “mob”-like approach to leadership and take aim at the President's disposition, which he says created “the forest fire that is the Trump presidency.”

“This President is unethical, and untethered to truth and institutional values, ” Comey wrote. “His leadership is transactional, ego driven and about personal loyalty.”