As Spencer Ackerman on June 16, Ellsberg’s whistleblowing came from a figure so highly placed in the national security apparatus he had the ear of presidential advisors.

Source: https://www.greenleft.org.au/content/daniel-ellsberg-establishment-whistleblower

Publication of the highly classified ignited a major freedom-of-the-press battle and led indirectly but ultimately to the downfall of Richard Nixon after it emerged White House operatives had broken into the office of Ellsberg’s psychiatrist.

Source: https://thenewdaily.com.au/news/world/us-news/2023/06/17/daniel-ellsberg-pentagon-papers-dead/