On 13 July 2023, H.E. Mr. Sarun Charoensuwan, as representative of the Deputy Prime Minister and Minister of Foreign Affairs, joined the ASEAN Post Ministerial Conference with Australia co-chaired by H.E. Mr. Saleumxay Kommasith Deputy Prime Minister and Minister of Foreign Affairs of Lao PDR, and H.E. Ms. Penny Wong, Senator and Minister of Foreign Affairs of Australia, stressing the importance of cooperation on peace and security, sustainable and green development, and human security.