The 11th annual meeting of the Working Group on Agriculture (WGA 11) and the 20th annual meeting of the Working Group on Environment (WGE 20) was jointly held in Nay Pyi Taw, Myanmar on March 25~26, 2014, with the theme on “Managing Natural Capital to Ensure Food, Energy and Water Security”. The meeting reviewed the progress of the Core Agricultural Support Program (CASP), which is an agricultural development plan of GMS¹⁾, and conducted opinion exchange among related organizations and donors. About 100 participants from GMS six countries and related international organizations, such as ADB, FAO and UNCTAD, as well as a number of NGOs which engage in the natural capital management, attended the meeting. JIRCAS reported its research outcomes from the project “Development of agricultural technologies in developing countries to respond to climate change”, which focuses on the Mekong Delta region. This year, a special exhibition, called “Environmental friendly agriculture marketplace”, was implemented at first time. JIRCAS set up a booth, where media materials including posters, publications, and videos were presented and oral explanations were made. 1) The Greater Mekong Sub-region (GMS), which includes Cambodia, China, Lao PDR, Myanmar, Thailand and Vietnam, was founded in 1992 by the Asian Development Bank (ADB) aimed to enhance sub-regional economic cooperation among the countries. Since then, working groups on specific sectors have been established in the GMS. The Working Group on Agriculture (WGA) was launched in 2002 as a discussion platform to promote agriculture cooperation within the GMS.