Night of Camp David - Wikipedia

This link is to a 1965 novel about a US Senator who may become new Vice President. He get summoned to Camp David by the current President. The President angrily rants about being persecuted by news media and wants to cut ties with NATO while pursuing normalization of relations with Russia. An FBI investigation ensues out of concern for national security. It is being re-released in 2018, over 50 years later...