The video “Defending Philippine Sovereign Rights in the West Philippine Sea” features retired Supreme Court Associate Justice Antonio T. Carpio delivering an in-depth lecture on the Philippines’ maritime rights and sovereignty under international law, particularly the United Nations Convention on the Law of the Sea (UNCLOS). The presentation explains China’s expansive nine-dashed line claim in the South China Sea and why it has no legal basis under UNCLOS. Carpio outlines the legal entitlements of the Philippines to its exclusive economic zone (EEZ) and extended continental shelf (ECS), details the significance of the 2016 arbitral award invalidating China’s historical claims, and underscores the strategic, economic, and environmental importance of defending Philippine sovereign rights in the West Philippine Sea.