John Bolton has been directly involved with foreign policy at least since he first worked at the State Department (the department responsible for the USAs foreign policy and relations) in 1989.
He has openly been a an advocate for military action and regime change by the US in several countries[1]. Recently he also openly mentioned his role in helping plan coups d'etat in an interview, when asked about the events on January 6th that followed the 2020 election:
"As somebody who has helped plan coups d'etat— not here but you know (in) other places— it takes a lot of work." [2]
Also, tragically enough, he in fact served as the 25th United States Ambassador to the United Nations. Just a reminder, when listing its principles, the first point of the UN's foundational charter reads: "The Organization is based on the principle of the sovereign equality of all its Members."
The USA counting a self-proclaimed "coup planner" as their ambassador to the UN can give us an idea of how fundamental interfering (ie, "hacking") other nation's affairs is to their foreign policy, and how little it respects the sovereignty of nations.
[1]: https://en.wikipedia.org/wiki/John_Bolton
[2]: https://www.youtube.com/watch?v=RRvMJDTrL2E
[3]: https://legal.un.org/repertory/art2.shtml
