<h1>Philippines Accuses China of Harassing Fisheries Vessels in South China Sea Amid Territorial Tensions.</h1> The Philippines has accused Chinese forces of harassing its fisheries vessels during a scientific survey in the South China Sea, near Sandy Cay in the Spratlys archipelago. The incident involved Chinese coast guard ships and a navy helicopter, leading to the cancellation of the survey. This event highlights ongoing territorial disputes, with China asserting sovereignty over most of the South China Sea, conflicting with claims by the Philippines and other nations. The U.S. has reiterated its commitment to defend the Philippines under their Mutual Defense Treaty, emphasizing concerns over China's actions undermining regional stability. China has warned the U.S. to avoid involvement in these disputes.