Philippines was being invaded by China, was incorrect. He pointed out that the Spratly islands were not part of the Philippines, when the US acquired the Philippines from Spain in the Treaty of Paris in 1898, and when the Japanese-ruled Taiwan itself had annexed the Spratly islands in 1938, the US-ruled Philippines did not challenge the move and never asserted that it was their territory. He also pointed out that other countries did not need to do full land reclamation since they already control islands, and that the reason China engaged in extensive land reclamation is because they needed it to build airfields since China only has control over reefs. The "Moro" as "people", is used to describe both the Filipino Muslims and their homeland. Ancestors of Moro people were the owners of Spratly Islands prior to the arrival of the Spanish colonials in the 16th century, according to the Sultan of Sulu in the southern Philippines reported in a local paper. "China has no right over the Spratly Islands in what it calls the South China Sea because that is part of our ancestral domain," Majaraj Julmuner Jannaral, Sultanate information officer, told the Philippine Star. "The Spratly Archipelago is part of the Sulu Sea (the inner area around the islands in the southern Philippines, which is part of the West Philippine Sea (designation of parts of the South China Sea claimed by the Philippines to be part of its EEZ)," Jannaral concluded. "Exploration of the marine territory and the waters around the Spratly Archipelago, Palawan in southwestern Philippines and the southern Philippines, belong to the residents in those areas," he added. The Sultanate of Sulu claims historic proprietary rights over the Spratly Islands since before the Spanish colonial era. Various incidents of fishing boats being harassed by Chinese warships have occurred. At least 2 vessels were rammed or sunk. One was a Vietnamese ship attacked by a Chinese coastguard vessel, and another was a Fillipino ship rammed and sunk by a Chinese fishing boat who let the Fillipino fishermen drift at sea without giving aid. The stranded fishermen were later rescued by a Vietnamese ship. In 2017, the United States despite not being a claimant in the Spratly dispute, reported using freedom of navigation operations (FONOPs) to challenge what it deemed as excessive and illegal maritime claims from multiple Asia-Pacific states including Cambodia, China, India, Indonesia, Malaysia, Maldives, the