On 26-29 August 2025, the Thai delegation, led by Mr. Bolbongse Vangphaen, Director-General of the Department of ASEAN Affairs, Ministry of Foreign Affairs, along with representatives from the Ministry of Natural Resources and Environment, Ministry of Agriculture and Cooperatives, Ministry of Finance, Department of East Asian Affairs, and the Thailand International Cooperation Agency, visited Singapore and Indonesia to discuss strengthening cooperation under the CLEAR Sky Strategy, which is a trilateral cooperation between Thailand, Lao PDR, and Myanmar.

The delegation exchanged views and experiences with Singapore and Indonesia on how to forge closer cooperation in tackling air pollution and haze in the Mekong sub-region and ASEAN, including green innovation, law enforcement, and carbon markets.

During the first leg of the visit, the delegation met with Singapore’s Ministry of Foreign Affairs, Ministry of Sustainability and the Environment, Meteorological Service, as well as the ASEAN Specialised Meteorological Centre.

In Indonesia, the delegation met with the Ministry of Foreign Affairs, Ministry of Environment/Environmental Control Agency and the Indonesian Agency for Meteorology, Climatology and Geophysics (BKMG), as well as the ASEAN Coordinating Centre for Transboundary Haze Pollution Control (ACC THPC).

The visit is part of follow-up efforts to the implementation of the trilateral Joint Plan of Action – CLEAR Sky Strategy launched on 29 October 2024. On 23-25 July 2025, the Department of ASEAN Affairs organised a study visit to Beijing for Thai agencies to strengthen cooperation with China to support the CLEAR Sky Strategy.