Association of Southeast Asia Nations (ASEAN) was created in 1967 in order to prevent the threat of communism in Southeast Asia. But, over time, new states joined it and goals and activities of this organization expanded to other areas such as economic, commercial, political and cultural ones. Thus, over time, cooperation between members expanded in a way today this regional organization is considered as one of the successful models of regional integration in Asia. The main purpose of this article is that how ASEAN encounters new security threats such as organized crimes, weapons of mass destruction and terrorism. Questions to be answered are that what ASEAN has done for combating new security threats and whether these actions were adequate or not?
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