This is the same sort of isolationist view that Americans had when World Wars I and II started.
It didn't end well then. The world finds its way to America even when America shuts its eyes and says it is invisible.
Terrorists will choose the ground they fight you on if you don't choose it for them.
That was always the mission, even if America forgot. Its allies remembered. We knew why we were there, taking casualties and spending treasure like you were.
I don't mind the company of John Bolton if he is still enthusiastic about fighting terrorists. We have been in Northern Ireland a lot longer than 20 years, and in the end, when they understood terrorism takes you nowhere, they wanted peace.