First Island Chain: Key Security Partners in Indo-Pacific Defense Japan, Taiwan, and the Philippines are anchoring the First Island Chain, forming a critical line of defense in the Indo-Pacific. As part of a U.S. strategy to deter potential Chinese aggression, these nations strengthen regional security through joint military coordination and power projection, underscoring their shared commitment to peace and stability in these strategic waters. #FirstIslandChain #IndoPacific #Japan #Taiwan #Phil