Foreign Minister Don Pramudwinai told visiting US Secretary of State Rex Tillerson on Tuesday that Thailand's trade with North Korea, which faces United Nations sanctions over its nuclear and ballistic missiles tests, has fallen sharply compared with a year ago.
Allied traditional Washington, Thailand is however one of the few countries in South-East Asia to host an embassy of north korea, and has strong trade linkages with Pyongyang.
Thai Foreign Minister Don Pramudwinai indicated to reporters that he and Tillerson had discussed Washington's efforts to ensure that pressure was maintained on North Korea to drop its nuclear weapons program.
Thailand on Tuesday pledged to abide by the new UN Security Council resolution to sanction North Korea as US Secretary of State Rex Tillerson visited the country.
Reuters reported exclusively last week that the number of North Koreans slipping illegally into Thailand has surged in recent months.
During his five-hour visit to Bangkok, Tillerson signed a condolence book for the revered late King Bhumibol Adulyadej, whose death after seven decades on the throne was felt deeply in Thailand.
Malaysia's relations with the USA had warmed after Najib took office in 2009 but he has increasingly leaned toward China، which had become Malaysia's biggest trading partner.
Tillerson is the highest ranking USA official to visit Thailand since the country's May 2014 coup. Thailand allegedly has been used as a springboard for third parties to launch major cyber-attacks, reportedly including the 2014 hack of film studio Sony Pictures. General Prayut is due to visit Washington at the invitation of US President Donald Trump, though no specific date has been set.
Thailand's own politics and human rights record were also in focus, as Washington strengthens relations with its oldest ally in the region after they were downgraded following the coup.
After being put on the USA list, Thailand defended itself with a 22-page justification that covered everything from its support for the United States in the Korean War to investment by U.S. companies in Thailand.
Activists say the Trump administration is minimizing human rights concerns in a country still run by a military government.
Rights groups had called for Tillerson to raise issues of human rights abuse committed by the Thai junta.
US State Secretary Rex Tillerson, left, is greeted by Philippine Foreign Affairs Secretary Allan Peter Cayetano in Manila, Philippines.
In a statement issued by the deputy government's spokesman, Lt Gen Weerachon Sukhonpatipak after the meeting, the prime minister, according to him, has assured Tillerson of Thailand's roadmap for a return to democracy.