John Bolton has spent his entire career pushing a foreign/military policy agenda that is not in the best interests of the citizenry of the United States. That makes him a “globalist” in my mind. It has nothing to do with what he thinks about the United Nations, international law, etc.
John Bolton has spent his career fighting for American sovereignty and pursuing American interests by dealing with global threats. You may not agree with his policies, but that doesn't make him somebody who pushes foreign interests, no more than it makes you a globalist because I disagree with your foreign policies.