Bolton has served in both Bush Administrations, it’s almost like we get a President Bush no matter who we vote for
And if they impeach and remove Trump, Pence becomes Bush 3.0
Along with his views on immigration and trade, a big selling point for Trump was his rejection of Bush/neocon foreign policy. His earlier cabinet appointments (Tillerson, McMaster) were disappointing. Bolton is much worse - Trump may as well have picked John McCain, Lindsey Graham, or Bill Kristol as his national security advisor.
The only consolation here is that most of Trump's cabinet members and senior advisors don't seem to last very long, so with any luck, Bolton will be back to his old job of ranting away on TV in a few months time.