The Copenhagen School of security studies is a school of academic thought with its origins in international relations theorist Barry Buzan's book People, States and Fear: The National Security Problem in International Relations, first published in 1983. The Copenhagen School places particular emphasis on the non-military aspects of security, representing a shift away from traditional security studies. Theorists associated with the school include Barry Buzan, Ole Wæver and Jaap de Wilde. Many of the school's members worked at the Copenhagen Peace Research Institute. A prominent critic of the Copenhagen School is Bill McSweeney.