U.S. Secretary of State Marco Rubio arrived in Manila on Monday to attend a summit with Southeast Asian leaders, amid rising tensions in the South China Sea following an incident involving the Philippine navy and the Chinese coast guard. The visit marks Rubio’s first to the Philippines in his current role and underscores Washington’s ongoing engagement in the region’s complex maritime disputes.
The U.S. State Department condemned what it called “dangerous and aggressive actions” by China after a Filipino sailor was reportedly wounded near a contested area in the South China Sea earlier this week. The Philippine military accused the Chinese coast guard of the incident close to a disputed outpost, while Beijing countered by dismissing the Philippine account as “a complete distortion of the truth.”
China claims sovereignty over nearly the entire South China Sea, a vital shipping route, despite an international tribunal ruling that invalidated many of its territorial claims. Several ASEAN member states, including the Philippines, also assert overlapping claims in the region. The United States has criticized China’s activities as provocations that undermine regional peace and stability and contradict Beijing’s stated commitments to resolve disputes peacefully.
In a recent op-ed published in Philippine media, Rubio emphasized the U.S. commitment to ensuring freedom of navigation in Southeast Asia and maintaining its security umbrella over the region. He warned that control of these waters by a power willing to wield trade as a geopolitical tool would present serious threats to the sovereignty and economic futures of both the United States and ASEAN countries.
During his Manila visit, Rubio is expected to meet with counterparts from the 11-member Association of Southeast Asian Nations (ASEAN). While his team has not confirmed any bilateral talks with Chinese Foreign Minister Wang Yi, who is also in Manila for the summit, Rubio expressed openness to meeting Wang to discuss these issues. The two officials have previously met at ASEAN summits and international forums.
Rubio’s visit occurs amid broader global tensions, including renewed conflict along the Strait of Hormuz involving the United States and Iran. On the sidelines of the ASEAN summit, Rubio plans to participate in meetings with members of the Quad alliance—Australia, Japan, and India—as well as with South Korea and possibly Vietnam. Discussions are expected to cover U.S. economic investments in energy infrastructure, critical minerals, and artificial intelligence, reflecting Washington’s broader strategic interests in the Indo-Pacific region.