On Wednesday, the State Department announced a list of 110 countries that would participate in the first online Summit for Democracy on December 9 and 10. Thailand did not appear on the invitation list.
China and Russia, too, were not invited.
Only three Asean countries will attend the summit – Indonesia, Malaysia and the Philippines.
When reporters asked Prime Minister Prayut Chan-o-cha about the matter on Thursday, the premier just gave them a grim look before walking into Government House.
The US-hosted summit is aimed at helping to halt the decline of democracy and the collapse of rights and freedoms around the world.
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