The International Seminar "Building a Comprehensive Maritime Security in Southeast Asia Region," held on August 18, 2009, successfully presented ideas and viewpoints on regional maritime security. I extend my gratitude to the organizing committee and all speakers and participants for their active engagement in the discussions. The seminar aimed to develop shared perceptions and commitments at both international and regional levels to enhance maritime security. The proceedings of the seminar capture valuable insights and are intended to foster a common understanding for future naval cooperation. It is hoped that the seminar's outcomes will significantly contribute to maritime security stability in the Southeast Asia region.