​The Twenty-first Meeting of the Sub-Regional Ministerial Steering Committee on Transboundary Haze Pollution (21^st MSC) was held on 6 August 2019 in Brunei Darussalam, and attended by Ministers/representatives responsible for the environment, for land, forest fires and haze, from Brunei Darussalam, Indonesia, Malaysia, Singapore, and Thailand, and the Secretary-General of ASEAN. The Twenty-first Meeting of the Technical Working Group on Transboundary Haze Pollution (21^st TWG) preceded the Meeting.