United States President Donald Trump will witness a formal peace agreement between Cambodia and Thailand during the upcoming ASEAN summit in Kuala Lumpur, Malaysian Foreign Minister Mohamad Hasan announced.

Trump is scheduled to visit Kuala Lumpur on October 26 to oversee the signing of the “Kuala Lumpur Accord,” aimed at ensuring peace and a lasting ceasefire between the neighboring countries, Hasan told reporters.

The 47th ASEAN Summit, running from October 26 to 28, will gather heads of state from 10 Southeast Asian nations and other dialogue partners. Hasan said the accord will be signed on the sidelines of the summit.

Prior to this announcement, Trump’s attendance at the summit was uncertain. Reports suggested his participation depended on whether ASEAN would hold an official ceasefire ceremony with him presiding. According to Politico, Trump requested that Chinese officials not join the ceremony, despite China and Malaysia playing major roles in facilitating the negotiations.

The peace deal follows a five-day border conflict in July that left at least 43 people dead and displaced over 300,000, stemming from disputes over unmarked sections of the 800km (500-mile) Thai-Cambodian border. Clashes continued sporadically into September, despite the ceasefire.

Earlier this year, Cambodian Prime Minister Hun Manet nominated Trump for the Nobel Peace Prize for his role in negotiating the agreement, calling it a “historic contribution to advancing world peace.”

Trump’s involvement in the Cambodian-Thailand peace process mirrors his recent actions in the Middle East, where he oversaw a ceasefire signing between Israel and Hamas in Gaza. Last Monday, he also convened world leaders in Egypt for an official ceasefire ceremony attended by leaders from around 20 countries.