I think Carlson is not so pro anything but stridently anti US involvement in any wars.
He seems to believe if the US would withdrew from the World, the World would leave the US alone.
There is a big difference between isolationist policy and non-intervention policy. Are you conflating the two?
If we conducted our foreign policy with the simple maxim "kill 1 of ours, we kill 10 of yours" then we would not need 750 bases all over the world, 5 or 6 would get us by.