There is more here than meets the eye. For his entire career John Bolton espoused conservative values, demonstrated love and devotion to America, warned about the danger of the Left and fought them in every forum. Now there is little doubt that he also espouses policies that other conservatives oppose such as American involvement in the Mideast quagmire. Also when serving under Trump he probably did not click with Trump personally and was frustureated that his influence was limited and marginalized.
Yet Bolton understands politics. He knows full well that his “memoir” is designed to hurt Trump and enhance the likelihood of Biden and the hard Left taking control of the Federal government. He knows that would be a disaster for America and contrary to all the values and passions he previously held. So what happened? IMHO John Bolton has a dark secret in his past that the Left somehow now knows. This hit job memoir to help Biden is no accident. Bolton has been compromised and is behaving accordingly.
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IMO, credit for that blackmail info on Bolton most likely goes to the Brennan - Clapper -- Comey-supported illicit supercomputer at Ft. Washington -- aka "The HAMMER"...
TXnMA