Michael Wolff's book "Siege: Trump Under Fire" highlights that one of the main sources for Woodward's latest publication is H.R. McMaster, a three-star general. McMaster served as the national security advisor for the Trump administration, taking over from Michael Flynn in February 2017, which underscores his pivotal role during that period.
The involvement of McMaster suggests that the insights and revelations in Woodward's work are grounded in authoritative knowledge from someone who was deeply embedded in the administration. This connection adds credibility to the accounts presented in the book and indicates the significant influence McMaster had on national security matters amidst the tumultuous political landscape of the Trump era.