Friendship treaty ...

The Treaty of Amity and Cooperation (TAC) was signed on 24 February 1976 in Bali during the First ASEAN Summit. The signatories were the five founding members: Indonesia, Malaysia, Philippines, Singapore and Thailand.

It aims to "promote perpetual peace, everlasting amity and cooperation among their peoples which would contribute to their strength, solidarity and closer relationship".

The remaining five members inked the TAC later.
Brunei (7 January 1984), Laos (29 June 1992), Vietnam (22 July 1992), Cambodia (23 January 1995) and Myanmar (27 July 1995).
Fifteen countries that are not ASEAN member states have acceded to the TAC:
1. Papua New Guinea (5 July 1989)
2. China (8 October 2003)
3. India (8 October 2003)
4. Japan (2 July 2004)
5. Pakistan (2 July 2004)
6. Republic of Korea (27 November 2004)
7. Russian Federation (29 November 2004)
8. Mongolia (28 July 2005)
9. New Zealand (28 July 2005)
10. Australia (10 December 2005)
11. France (13 January 2007)
12. Timor-Leste (13 January 2007)
13. Sri Lanka (30 July 2007)
14. Bangladesh (30 July 2007)
15. Democratic People’s Republic of Korea (24 July 2008)

Asean Secretariat