him from accessing those materials and, furthermore, forbidding anyone in the intelligence community from sharing classified information, specifically, with john brennan. imagine the president being so obsessed with you that he uses the powers of the presidency just to make your individual life more difficult, even after you have left government. trump's obsession with john brennan has practical consequences. but it's also on its fact -- on its face, you know, telling about the president and his obsessions. it also leads to the title of the book, "undaunted: my fight against america's enemies at home and abroad." in the "at home" there, the emphasis is silent. former director of the cia, john brennan, joins us next. his book is out tomorrow. brennan, joins us next his book is out tomorrow >>> joining us now, i'm pleased to say, is former cia director john brennan. his new book is out tomorrow. it's called "undaunted: my fight against america's enemies at home and abroad." congratulations on the book, director brennan. it's nice to see you. >> thank you, rachel. thank you for having me on tonight. >> so, i read it cover to cover. i learned a lo