This thesis analyzes the military capabilities of Malaysia, Singapore, and Indonesia and assesses their collective ability to control the use of the Straits of Malacca and the Singapore Straits. With steadily growing economies as a source of funding, Malaysia, Singapore, and Indonesia have made significant improvements in their military stature. Collectively, they can control this vital passage, preventing both military and commercial shipping from using these straits. These three littoral nations' key interests that might lead them to restrict and deny the use of the Malacca Straits are identified. Their military force composition and capability also is reviewed.