[3] On 23 July 2001, the parties established the rules of procedure of the treaty's High Council, which was stipulated in Article 14 of the document.
[4] On 7 October 2003, during the annual summit, a declaration was released that says:[5] Papua New Guinea was the first country outside ASEAN to sign the treaty in 1989.
[6] The European Union announced in 2009 its intention to accede as soon as the treaty would be amended to allow for the accession of non-states[7][8][9] and joined accordingly on 12 July 2012.
[10] The treaty has been endorsed by the General Assembly stating that:[11] The purpose of the Treaty is to promote perpetual peace, everlasting amity and co-operation among the people of Southeast Asia which would contribute to their strength, solidarity, and closer relationship.
In their relations with one another, the High Contracting Parties shall be guided by the following fundamental principles;[12] The following table lists the parties in the order of the dates on which they entered into the treaty: Even though Spain was recognized as a member of the treaty on 10 November 2022,[51] they have yet to ratify their accession.