The South China Sea (SCS) has become the setting of one of the most intensive territorial and resource disputes in history. A myriad of small and medium states, together with the two greatest economic and military powers in the contemporary period, have laid claim to and contest states’ alternative claims to large sections of the SCS. China, as a revisionist power, has made the most sweeping claim of all states, designating nearly the entire sea as its own. In addition to its extensive resources, the SCS is a vital strategic waterway and a strategic locale critical for future power projection by existing great and rising powers. This chapter unpacks the central components of the conflict in the SCS that has been steadily intensifying since states began staking claims over islands and zones within the SCS in the 1970s. In doing so, we refer to the SCS as a “system of systems” involving multi-dimensional security overlay based on political, economic, and military interests as well as power projections. We argue that the central challenge facing would-be defenders of the status quo is their decentralized organization, with the US, the Philippines, and Vietnam intersecting in various subsystems though not forming a cohesive cooperative security system with a unified, cohesive purpose. Concurrently, China has seen much more success in marshalling a coherent, focused (Sinocentrist) stratagem for its salami-slicing approach in the region, much to the detriment of the region’s status quo actors, even in spite of internal competition and rivalry regarding China’s grand strategy and geopolitical trajectory as a state.