The Ministry of Foreign Affairs has confirmed a key diplomatic move. It sent a letter to the United Nations Secretary-General (UNSG) explaining its side of a border dispute. This action follows Cambodia’s decision to inform the UN of its wish to sue over the same issue.
News outlets had been asking about reports online. These reports spoke of a letter from Cambodia’s Permanent Representative to the UN in New York. That letter told the UNSG that Cambodia wanted to take its border issues with its neighbor to the International Court of Justice (ICJ).
On July 5, 2025, Nikorndej Pholanggoon, who leads the Department of Information and speaks for the Ministry of Foreign Affairs, offered some clarity. He explained the steps taken by both nations at the UN.
Cambodia made the first official step on June 16, 2025. Its Permanent Representative in New York sent a letter to the UNSG. This letter discussed what Cambodia called “tense situations” along the border. Cambodia asked for this letter to be shared as an official document. It was requested under Agenda Item 32, “Prevention of armed conflict,” for the 79th session of the UN General Assembly.
Three days later, on June 19, 2025, the other nation responded. Its own Permanent Representative in New York sent a letter to the UNSG. This letter included a formal statement dated June 18, 2025. It laid out the facts and the country’s stance on the border situation. The statement stressed that its actions follow international law and the 2000 Memorandum of Understanding (MOU2000). It also reaffirmed a commitment to solving problems through direct talks. Like Cambodia, it asked for both its letter and the statement to be shared as a UN General Assembly document under Agenda Item 32.
The UNSG has since registered both countries’ letters. This means they are now part of the official record for the 79th UN General Assembly session. Essentially, this circulates the letters so all UN member states can see them.
This process is a normal part of how the United Nations works. When a member country sends a letter under a General Assembly agenda item, it’s a way to formally record their information or position. It helps other countries become aware of the situation. So, when Cambodia sent its letter, the other nation followed suit. This ensured its own position was also clearly on record for the UN community to review.
You can find the official document from the Ministry of Foreign Affairs by visiting their website: https://www.mfa.go.th/th/content/letter-thai-to-unga