Explanation:

The Association of Southeast Asian Nations- ASEAN is a regional intergovernmental organization comprising 10 official members- Indonesia, Thailand, Myanmar, Cambodia, Laos, Vietnam, Singapore, Malaysia, Philippines, Brunei and 2 affiliate members. This group promotes intergovernmental cooperation and facilitates economic, political, security, military, educational and sociocultural integration amongst its members.
Current headquarters of ASEAN- ASEAN Secreteriat is located in Jakarta, Indonesia