Alexander Wendt is one of the core social constructivist scholars in the field of international relations. Wendt and scholars such as Nicholas Onuf, Peter J. Katzenstein, Emmanuel Adler, Michael Barnett, Kathryn Sikkink, John Ruggie, Martha Finnemore, and others have, within a relatively short period of time, established constructivism as one of the major schools of thought in the field. In a recent survey Wendt was listed as the third most influential scholar of international relations in the world.