Frederick H. Fleitz, Jr. (born February 24, 1962) is a former U.S. government official, serving since January 2022 as Vice Chairman of the America First Policy Institute Center for American Security. He previously served as the Chief of Staff and Executive Secretary of the National Security Council from May through October 2018, during the administration of U.S. President Donald Trump. Fleitz is a former CIA analyst, and news commentator. Career First stint in government Fleitz served in U.S. government national security positions for 25 years with the Central Intelligence Agency, Defense Intelligence Agency, Department of State, and the staff of the U.S. House Committee on Intelligence. Fleitz spent 19 years with the CIA. He wrote the 2002 book, Peacekeeping Fiascoes of the 1990s: Causes, Solutions, and U.S. Interests. From 2001 to 2006, Fleitz served as chief of staff to Undersecretaries of State for Arms Control John Bolton (2001–2005) and Robert Joseph (2005–2006). Arianna Huffington described Fleitz in a 2005 article as "Bolton's chief enforcer." Fleitz's name first hit the press in the spring of 2005 during the battle in the Senate Foreign Relations Committee to confirm Bolton as U.S. Ambassador to the United Nations. Several accounts describe difficult challenges Fleitz faced as Bolton's Chief of Staff, mostly involving conflict over a controversial speech Bolton delivered on a possible Cuban biological weapons program. Most contemporaneous press accounts in 2005 portrayed this matter as a personnel dispute over a disagreement with two intelligence officers over assertions Bolton wanted to make in the speech. In his own testimony, Fleitz said one of the analysts had forwarded Bolton's speech for the CIA to review, but attached his own dissenting commentary and then denied doing so. This led to a confrontation and an apology from the analyst's supervisors. Fleitz testified that the other analyst campaigned against the speech after it had been delivered to Congress and the press. Investigative reporter Kenneth Timmerman in his 2007 book Shadow Warriors (Crown Forum) wrote that controversy over Bolton's 2002 Cuba speech stemmed from heavy pressure from a small number of intelligence officers who favored a softer line on Cuba. Timmerman claims these intelligence analysts politicized Bolton's text and that Fleitz resisted their efforts. Rowan Scarborough, in his 2007 book Sabotage: America's Enemies Within the CIA (Regnery), came to a similar conclusion and wrote that Fleitz paid a professional price for defending Bolton and standing up to political pressure