Maybe John Bolton’s old and new bosses wanted to have a word with him.
From February 19, 2017. “Rand Paul rejects John Bolton to replace Michael Flynn: ‘He still believes regime change was a good idea'” http://theweek.com/speedreads/681250/rand-paul-rejects-john-bolton-replace-michael-flynn-still-believes-regime-change-good-idea via @TheWeek