NOWPAP representatives attended the 4th High Level Forum on Aid Effectiveness held from 29 November to 1 December 2011 in Busan, Republic of Korea, in order to learn the recent developments and priorities of major international donors, including in the field of environment. Organized by the Organization for Economic Cooperation and Development (OECD) and the Government of Republic of Korea, this high level forum was concluded with a declaration of Busan Partnership for Effective Development Cooperation.