The S. Rajaratnam School of International Studies is an autonomous graduate school and policy-oriented think tank within the Nanyang Technological University, Singapore. Founded in 1996 as the Institute of Defence and Strategic Studies, RSIS offers graduate education in international affairs, taught by an array of international faculty. The sc…The S. Rajaratnam School of International Studies is an autonomous graduate school and policy-oriented think tank within the Nanyang Technological University, Singapore. Founded in 1996 as the Institute of Defence and Strategic Studies, RSIS offers graduate education in international affairs, taught by an array of international faculty. The school is named after former Deputy Prime Minister of Singapore S. Rajaratnam. It is regarded as one of the best graduate schools of international relations in Asia.