The 6th Greater Mekong Subregion Summit of Leaders issued a joint declaration, entitled "Leveraging 25 Years of Cooperation for a Sustainable, Integrated and Prosperous GMS," in Ha Noi, Viet Nam on 31 March 2018.

This is the summary of discussions at the 12th Meeting of the Regional Power Trade Coordination Committee (RPTCC-12) in Vientiane, Lao People's Democratic Republic on 17 to 18 May 2012.

The joint declaration, entitled "Committed to Inclusive and Sustainable Development in the GMS," was issued at the 5th Greater Mekong Subregion Summit of Leaders in Bangkok, Thailand on 19-20 December 2014.