US President Donald Trump arrived in Japan on Monday, the second stop of his five-day tour of Asia — his longest journey abroad since taking office in January. His first stop was the Association of Southeast Asian Nations (ASEAN) summit in Kuala Lumpur, Malaysia, where he oversaw the signing of a peace agreement between Thailand and Cambodia. Dubbed the Kuala Lumpur Peace Accords, it was built on a ceasefire reached after Trump intervened in July after the decades-long Thailand-Cambodia border dispute erupted into five days of deadly clashes. After the border deal was inked, Trump praised Thai Prime Minister Anutin Charnvirakul and Cambodian Prime Minister Hun Manet for their courage, adding that the truce he brokered saved "millions of lives." "This is a momentous day for all the people of Southeast Asia as we sign a historic agreement to end the military conflict between Cambodia and Thailand," Trump said. Both countries confirmed their "unwavering commitment to peace and security," agreed to organize de-mining efforts along their border, withdraw heavy weapons and allow access to ceasefire monitor teams organized by ASEAN. Thailand agreed to release the 18 Cambodian soldiers it has held in captivity since July. Trump also signed reciprocal trade deals with Malaysia and Cambodia. Vietnam pledged to increase its purchase of US products to reduce a trade surplus of $123 billion (€106 billion) in 2024. The US president left Malaysia earlier on Monday for Japan. The country's new prime minister, Sanae Takaichi, only took office last week and is banking on building a friendly personal relationship with Trump to ease trade tensions. While on Air Force One on Monday, Trump said he planned to talk in Tokyo about the "great friendship" between the US and Japan.