The reform process of United Nations peace operations : debriefing and lessons : report of the 2001 Singapore Conference / the United Nations Institute for Training and Research (UNITAR), the Institute of Policy Studies (IPS) of Singapore, and the Japan Institute of International Affairs (JIIA) ; prepared under the direction of Nassrine Azimi and Chang Li Lin, editors / Nassrine Azimi, ChangLi Lin, 日本国際問題研究所, ほか