A challenge to the American Secretary of War by a representative of the Senate in this country; Name an ASEAN member country! Senator Duckworth to the US Secretary of War: Can you tell me the name of a member country of ASEAN (Association of Southeast Asian Nations)? What agreement do we have with them? How many member countries are in ASEAN? Pete Hegset: I can't say the exact number, but for sure our allies in South Korea, Japan and Australia... Duckworth: Mr. Hegset, none of these countries are members of ASEAN.