The United States and the Philippines plan to step up joint military exercises and widen defense coordination in the South China Sea, according to officials on Sunday. The move comes as maritime tensions with China continue to grow in one of Asia’s most contested waterways.

The expanded cooperation is expected to focus on readiness, interoperability, and regional deterrence. For Manila, the partnership reflects an effort to strengthen its ability to respond to pressure at sea while leaning on a longstanding security ally.

The South China Sea remains a flashpoint because of overlapping territorial claims and frequent encounters between Chinese and Philippine vessels. Analysts say the latest defense measures underline how sharply the rivalry between Washington and Beijing is shaping security decisions across the region.

The announcement adds another layer to a broader U.S. effort to reinforce alliances in the Indo-Pacific as competition with China intensifies. It also signals that the Philippines intends to keep deepening military coordination despite the risks of further escalation.