At the recent ASEAN meeting in Manila, United States Secretary of State Marco Rubio held a critical discussion with China’s top diplomat, Foreign Minister Wang Yi, to address escalating tensions between the two global powers. The dialogue was set against a backdrop of heightened disputes over China's assertive actions in the South China Sea and the ongoing US conflict with Iran, both of which have sparked deep concern among ASEAN member states.
With a high-stakes presidential summit between US President Donald Trump and Chinese President Xi Jinping looming in the near future, the meeting sought to explore ways to prevent further deterioration of relations. The regional leaders have voiced serious anxieties about the potential implications of these international flashpoints on Southeast Asia's stability.
A Summit in the Balance
Rubio acknowledged that the US and China are far from aligned, with what he described as 'great differences' expected to persist for the foreseeable future. Despite this, he and Wang Yi emphasized the importance of managing these disputes to support a constructive and successful presidential visit from Xi later this year, which both sides hope will set a positive tone for the broader US-China relationship.
According to an official Chinese summary, Wang Yi urged the US to recognize China's 'core interests' and to 'effectively manage differences and disagreements, and address China’s legitimate concerns.' The bilateral discussion was characterized as 'pragmatic, positive, and constructive.' China’s Ministry of Foreign Affairs added that both parties have committed to 'make sound preparations for the next stage of high-level exchanges.'
A Flashpoint in the South China Sea
The meeting took place just days after a violent confrontation at the disputed Second Thomas Shoal in the South China Sea. A Philippine sailor was injured in the clash, which prompted both the Philippines and China to recall their ambassadors to each other’s countries. China claimed that Philippine personnel initiated the violence by ramming a Chinese patrol boat, while the Philippines accused Chinese coastguards of using batons to attack their own sailors.
Rubio was quick to condemn the incident, emphasizing that it benefited no one. He reiterated the US's commitment to its defense treaty with the Philippines, stating, 'We intend to live up to our treaty obligations and will continue to do so.' These remarks echoed a recent editorial in a Philippine media publication where he warned of new regional threats if a power were to dominate the waters and exploit commerce for political leverage.
Central to the ongoing disputes in the South China Sea are China's extensive maritime claims, which stretch across the exclusive economic zones of neighboring countries like Brunei, Indonesia, Malaysia, the Philippines, and Vietnam. These overlapping territorial claims have led to years of diplomatic and legal tensions. The Philippines has taken a bolder stance in recent years, especially as it has deepened security ties with the US, Australia, and Japan.
In response, the US has bolstered its support for the Philippines, allocating $100 million in military funding for the 2026 fiscal year and providing an additional $9 million to expand a Philippine coastguard pier on Palawan. The State Department described these investments as necessary to 'enhance Philippine maritime law enforcement presence and sustain operations in the South China Sea.'
During his meetings with ASEAN foreign ministers, Rubio also addressed the US stance on Iran. He claimed that Tehran is not approaching negotiations in good faith, noting, 'If they’re serious, we’re serious. If they’re not, then we will do what’s necessary to protect our interests, and also the interests of our allies.' This came after the US carried out 11 consecutive nights of military strikes in Iran, targeting roads, bridges, and power plants. These attacks effectively dismantled an interim peace agreement reached between the two sides last month.
The South China Sea and the US-China relationship continue to be central to the region's stability. Meanwhile, the US-led war with Iran adds further complexity to diplomatic efforts. As tensions simmer, the US has maintained that its engagement with Southeast Asia is not only in its own national interest but also crucial for the long-term prosperity and security of the entire region.