abstract: This dissertation seeks to theorize small state strategic culture with special reference to the attitude of the ASEAN states toward institutionalizing regional cooperative security architectures. The quantitative case studies show that in small states where historically rooted strategic preferences may be limited, material influences and situational considerations take precedence over ideational factors in the making of the state's strategic culture. Second, the content of small state strategic culture focuses primarily on foreign and security policy issues that originate in their neighborhood. Lastly, Small states' threat perceptions from the neighborhood over time dictate the formation of strategic culture (provocative vs. cooperative). The qualitative case studies demonstrate that small Southeast Asian states (Singapore, Thailand, and Malaysia) exhibit a higher tendency for conflict. Multilateral cooperation is at best selective. Bilateral means is still the preferred policy approach when dealing with other states. This dissertation concludes with a pessimistic remark on the prospects for the development and maturation of the ASEAN Political-Security Community. At its current stage, the APSC appears to be a policy instrument created only to reinforce ASEAN's centrality in charting the region's security architecture. This is no small accomplishment in itself nonetheless. / Dissertation/Thesis / Ph.D. Political Science 2011