association of south east asian nations, commonly abbreviated asean, is the international cooperation located in south east asia. there are 10 member countries, namely , thailand ,.............., and 2 observer states ; papua new guinea and timor leste. the secretariat is situated in jakarta, indonesia. asean firstly was formed by an organization called asa (association of south east asia) by 3 countries ; thailand, malasia, and the philippines. but ASA was cancelled few months later because of conflict between sabah of indonesia and sarawak of malasia.
since then, ASA has been developed and restored.
the ASA was changed to asean and became "asean declaration" or commonly known as "bangkok declaration" , signed on 8 th august 1967 by 5 core countries ; ไทย มาเล สิง อนโดและฟิลิ .