On 5 June 2025 at JL World Hotel, Dili, H.E. Mr. Atipat Rojanapaibulya, Ambassador of Thailand to Timor-Leste, attended a seminar titled "Strengthening Parliamentary Participation in Timor-Leste's Accession to ASEAN", co-organized by the National Parliament of Timor-Leste, in collaboration with the European Union, Thailand International Cooperation Agency (TICA) and the International Trade Centre (ITC). Hon. Mrs. Maria Fernanda Lay, President of Timorese Parliament, presided over the opening ceremony. Ms. Milena Rangel, Vice-Minister for ASEAN Affairs of Timor-Leste, along with MPs from the National Parliament of Timor-Leste, also participated in the seminar. Hon. Ms. Piyarat Tiyapairat and Hon. Mr. Taopiphop Limjittrakorn, Thai MPs, were invited to be speakers during the session titled "Parliamentary engagement in ASEAN - lessons from Thailand."

The Ambassador of Thailand, in his opening remarks, congratulated Timor-Leste on its successful accession to ASEAN, which will officially take place during the 47th ASEAN Summit in October 2025. He emphasized the close ties between Thailand and Timor-Leste, dating back to Thailand’s participation in the peacekeeping mission in 1999 and the establishment of the diplomatic relations in 2002, as well as Thailand’s continued support for Timor-Leste’s accession to ASEAN.

After the presentation, Thai and Timorese MPs discussed their parliamentary work post-ASEAN accession, including AIPA framework, compliance with ASEAN rules and regulations, and ways to spread understanding of ASEAN among the public.