This paper is a discussion and evaluation of ASEAN's efforts to manage its regional security environment (i.e., to affect the actors and events shaping security in Southeast Asia). The main argument of this paper is that ASEAN's ability to manage regional security in Southeast Asia has been, and is, limited by two factors: one, the interests and actions of the great powers, which have defined the parameters of ASEAN's security policies; and two, divergent security perceptions and interests within ASEAN, which have defined the limits of intraorganizational cooperation and made it difficult to evaluate the significance of ASEAN's stated security objectives.  Author: Narine, Shaun.  Publication: Pacific Affairs, Jun 22, 1998.