HONOLULU: (UPDATE) President Ferdinand Marcos Jr. said the situation in the South China Sea 'has become more dire' as China expands its presence in an area where multiple nations have competing territorial claims.China has shown interest in atolls and shoals that are 'closer and closer' to the coast of the Philippines, with the nearest atoll about 111 kilometers away, Marcos said.'Unfortunately, I cannot report that the situation is improving,' Marcos said Sunday (Monday in Manila). 'The situation has become more dire than it was before.'Marcos spoke during a question and answer session after he delivered a talk at the Daniel K. Inouye Asia-Pacific Center for Security Studies in Honolulu. He stopped in Hawaii to meet with US military leaders and the local Filipino community on his way home from an Asia-Pacific Economic Cooperation (APEC) summit meeting in San Francisco.The visit held both geopolitical and personal significance for Marcos. His father, Ferdinand E. Marcos Sr., was forced into exile in Hawaii in 1986 after he was ousted in a 'people power' uprising.Rare meet President Ferdinand Marcos Jr. meets Chinese President Xi Jinping on the sidelines of the Asia-Pacific Economic Cooperation Summit in San Francisco, California. CONTRIBUTED PHOTOHis trip comes at a time when the United States and the Philippines have been deepening their long-standing alliance in a shift after Marcos' predecessor, Rodrigo Duterte, nurtured cozy ties with China and Russia.China claims virtually the entire South China Sea as its own territory and refuses to acknowledge claims from the Philippines and four other governments to some or all of the waterway. Beijing has dismissed the findings of a United Nations-backed arbitration tribunal that invalidated China's sweeping historical claims under the UN Convention on the Law of the Sea.Marcos reiterated that his nation wouldn't yield.'The Philippines will not give a single square inch of our territory to any foreign power,' he said in his speech.The US says China has militarized several islands it built in the area, arming them with anti-ship and anti-aircraft missile systems, laser and jamming equipment, and fighter jets.Marcos said features in the South China Sea are 'slowly being turned into bases.' He said Adm. John Aquilino, the top US military commander in the Indo-Pacific region, showed him a model of one earlier in the day.The level of commitment China made 'to those military bases' was 'remarkable,' Marcos said.Tensions in the area have risen recently as China has blockaded an isolated Philippine marine outpost on Ayungin Shoal.Last month, a China Coast Guard ship and an accompanying vessel rammed a Philippine Coast Guard ship and a military-run supply boat near the contested shoal, according to Philippine officials.China accused the Philippine vessels of trespassing in what it said were Chinese waters 'without authorization' despite repeated radio warnings.The US and the Philippines have a mutual defense treaty dating to 1951.Marcos said the US, as its only treaty ally, was its main partner. But he said Manila also was seeking to strengthen ties with other nations sharing its ideals and values, noting the examples of Australia, Japan and South Korea.He said the Philippines also was seeking to negotiate a code of conduct with Vietnam and Malaysia, other nations with whom it has territorial conflicts.Marcos' remarks came after he met Friday with Chinese President Xi Jingping on the sidelines of the APEC summit.He told reporters afterward that they agreed the challenges in the South China Sea 'should not be the defining element' of their relationship. Marcos said the two leaders tried to come up with mechanisms to lower tensions in the South China Sea.Many Filipino immigrants to Hawaii come from the same province as Marcos, Ilocos Norte, and support him. But he still faced small protests at the airport and at a convention hall where he met members of the local Filipino community.Satu Limaye, the vice president of the East-West Center, noted the US and the Philippines have a long, complicated relationship. He pointed to years when the US ruled the archipelago as a colony, their signing of the defense treaty and when the US military withdrew from major bases in the country in the 1990s.Limaye said it's important to watch how the US and the Philippines manage their nations' long and complex relationship while facing their common concern, China.The President was on his last stop of his weeklong official visit to the United States highlighted by his participation in the 30th APEC Economic Leaders' Meeting held in San Francisco, California.