I have never heard of a realist. I try to pay attention.
I have no use for Paul and would never vote for him. He is not a republican, I believe he is an isolationist and I would never support that position.
But you do what you want
I liked these bums in gizmo. It was a good place to store them awaiting a trial. Putting these people in a US prison where they can recruit the weak minded invites more trouble
Henry Kissinger(Real Politik) is a Realist. The "Wise Old Realists" are republicans Kissinger and Brent Scowcroft plus democrat Zbigniew Brzezinski. Today, the top Realists in the Senate are Bob Corker(R) and Diane Feinstein(D)
Under Nixon, Ford, Carter, Reagan, and GHW Bush the Realists were most influential but under Clinton the Liberal Interventionists rose to power and under Bush the NeoCons rose to power.
So we call these Liberal Interventionists and NeoCons Idealists or Wilsonian Idealists because they are big on humanitarianism, nation building, and spreading democracy.
Combined, the Liberal Interventionists and NeoCons are very powerful. The NeoCons have been very successful at purging both the Isolationists and Realists from the GOP.