H.R. McMaster's tell-all memoir draws scrutiny from security veteran

Former National Security Adviser H.R. McMaster's latest book "At War with Ourselves: My Tour of Duty in the Trump White House," has drawn scrutiny from a senior Trump administration security official.

McMaster served as Trump's national security advisor until 2018, when Trump replaced him with John Bolton. Last month, he published his account of working for Trump.

Former National Security Council chief of staff Fred Fleitz, for his part, called the book "dripping with derision because of Trump’s decision to fire him after just over a year on the job."

Fleitz took aim at McMaster's account of his strained relations with Trump, particularly his emphasis on a comment in which McMaster claimed that evidence supporting Russian interference in the election was "incontrovertible."

"The reality is that this was not a matter of McMaster being misquoted or unnamed adversaries working against him with the president," Fleitz wrote. "Although McMaster’s comment about the Mueller report was in line with the New York Times editorial board, his remark obviously was not Trump’s view. As a cabinet member and the President’s National Security Adviser, McMaster had no business publicly disagreeing with Trump on such a sensitive issue, especially at a conference held overseas."

McMaster's book follows a memoir from Bolton, whom Trump also fired. Both were widely regarded as gravitating toward traditional foreign policy positions, in contrast with their commander-in-chief.