China is Cambodia's biggest donor and source of loans, with an estimated $15 billion in aid and loans distributed to Cambodia over the past 20 years.
The briefings devoted a great amount of attention to developments in Indochina, where the U.S. was attempting to withdraw from the Vietnam War and support faltering governments in nearby Cambodia and Laos.
A meeting has been scheduled between the two sides for August 29 to discuss the issue.
The plaintiffs say they were tricked into working for the companies and spent nearly two years – between 2010 and 2012 – living in “forced labor, servitude, and peonage.”
A key question is whether China will continue to assert territorial claims that regional countries and the United Nations dispute.
The 12 attacks across southern Thailand's beach resorts came as the country marked the 84th birthday of Queen Sirikit, a national holiday.