'', standpoint of structural theorizing in the social sciences more gen-. Some economists see the market as an institution, constituted by shared ideas, others see only material forces. It involves. apart from the attributes and interactions of agents. However, in taking this stance I take. All citations in this article use this method. Following Onuf (1989), capital letters denote the academic ®eld, lower case the. The purpose of this study is to enrich the perspective of Indonesia's foreign policy related to participation in UN PKO, especially in the era of the President Joko Widodo using the non-material aspects of constructivist. See, for example, Campbell (1992), Klotz (1995), Price (1995), Biersteker and W. eds. The results of this study prove that the role of Indonesian peacemaker will always reflect that role in every era of government because it has become a constitutional mandate in the 1945 State Constitution