The United States has condemned China for what it described as "dangerous and aggressive" actions against Philippine navy personnel in the contested South China Sea.

The statement follows reports from Manila that a Chinese coast guard officer repeatedly struck a Filipino sailor during a confrontation at the Second Thomas Shoal on Monday.

The incident marks a significant escalation in maritime friction between the two nations, occurring just days before U.S. Secretary of State Marco Rubio is scheduled to visit Manila.

Rubio's trip coincides with meetings of Southeast Asian foreign ministers, where Chinese diplomat Wang Yi is also expected to attend, setting the stage for high-stakes diplomatic exchanges.

Markets are monitoring the situation closely for potential disruptions to shipping routes and energy flows.

The South China Sea remains a critical chokepoint for global trade, and any further deterioration in relations could weigh on risk sentiment across Asian equities and commodities.