Jun Arima is a Project Professor at the Graduate School of Public Policy of the University of Tokyo, a Distinguished Senior Research Fellow at the Asia Pacific Institute of Research (APIR), Senior Policy Fellow at the Economic Research Institute of ASEAN and East Asia (ERIA). Professor Arima received his B.A. in Economics from the University of Tokyo in 1982, joining the Ministry of International Trade and Industry (MITI-renamed METI in 2001) that year. He proceeded to work in the Energy and Environment Office and the Agency of Natural Resources and Energy until the 2000s through various roles, including as Counsellor of the Permanent Delegation of Japan to the OECD and Director of International Energy Strategy. He began accepting external postings in the 2000s, including Head of the Country Studies Division of the IEA from 2002-2006 and Director General of the London branch of the Japan External Trade Organization from 2011 to 2015 after his post as Deputy Director General for Global Environmental Affairs in METI which ended in 2011. Professor Arima has extensive experience and publishing in the energy and environmental fields, including various publications on international climate change negotiations and energy policies.