sentences:  The groundwork of the establishment of the future Southeast Asian Nuclear-Weapon-Free Zone Treaty (SEANWFZ) was started on November 27, 1971, when the 5 original members of the Association of Southeast Asian Nations (ASEAN), Indonesia, Malaysia, Philippines, Singapore, and Thailand, met in Kuala Lumpur, Malaysia and signed the declaration on ASEAN's Zone of Peace, Freedom and Neutrality (ZOPFAN).One of the targets of ASEAN was also the establishment of SEANWFZ.However, due to the political atmosphere at that time, including rivalries among the members and conflicts in the region and the Cold War, it was less feasible then to establish SEANWFZ.