Gates is a Foreign Policy Realist aka Pragmatist. Other prominent Republican Realists are Kissinger, Brent Scowcroft, James Baker, George Schultz, Colin Powell, Condi Rice.
I know people adore Condi Rice, but Condi is an animal of the leftist State Department. She exposes the truth about who she is in her loyal support to the radical Kenyan in the White House.
The Realists are Globalists
The NeoCons are Globalists
The Liberal Interventionists aka Liberal Internationalists are Globalists.
The only ones who aren't Globalists are the left wing pacifists and the right wing isolationists.