Parsing the latest China-US Taiwan Strait incident

A major purpose of US Secretary of State Antony Blinken’s visit to China was, in his words, to re-establish communications and reduce “misunderstandings and miscommunications” to prevent or manage incidents between the two countries’ militaries.

The June 3 near-collision of Chinese and US warships in the Taiwan Strait is a prime example of such incidents. But Blinken was unsuccessful in re-establishing the most crucial link, military-to-military communications.

Moreover, even if better communications are established, dangerous incidents will still occur. This is because they do not stem from misunderstandings and miscommunications but are rooted in deeper differences regarding the “international order” and strategic interests.  

The June 3 incident occurred while Chinese Defense Minster Li Shangfu and US Defense Secretary Lloyd Austin were attending the Shangri-La Security Dialogue in Singapore.  They may well have known that such an incident was likely. Anyway it provided an opportunity to enunciate their positions.

The two powers are locked in an intensifying tit-for-tat struggle for political and military dominance in the region and beyond. In the case of the June 3 incident it was a clash between the US demonstration of its theoretical right under international law versus China’s right to protect its security.

Rivals demonstrate perceived ‘rights’

Put another way, the conflict is between the use of a “right” to gain an advantage over a potential enemy versus a country’s right to defend itself.  The incident messaged each sides’ position and willingness to back it up militarily. 

Prior to cutting across its bow, the Chinese destroyer radioed the US warship that it should move or there would be a collision. The US alleged that the Chinese warship’s maneuver was illegal, unprofessional, and unsafe.

US spokesman John Kirby said the close encounter was “part and parcel of an increasing level of aggressiveness” by China’s military. In response, Li said that “we must prevent these attempts that use freedom of navigation to assert hegemony.” 

To put it in perspective, consider the US reaction if China, despite US security concerns, were to undertake such repeatedly activities in the US exclusive economic zone (EEZ) to “demonstrate its right to do so.”

While it might not object legally, given the strained relations, it surely would be seen as an unfriendly and provocative act. The US would likely monitor such activities closely, even “harass” the assets undertaking the activities and plan “countermeasures” in the event of an attack.

 As Kirby also said, ”Air and maritime intercepts happen all the time. Heck, we do it.” The difference is, Kirby claims, ”when we do it, it’s done professionally, and it’s done inside international law, and it’s done in accordance with the rules of the road.” So this is a matter of interpretation of “professional,” the relevant “international law” and the “rules of the road.”

The two have long sparred over close-in US maritime and air probes aimed at China. Indeed, this incident came on the heels of what the Americans called an unsafe and unprofessional intercept of a US plane over the South China Sea. That plane was collecting intelligence on a Chinese aircraft-carrier strike group that was undertaking exercises.

The US claims, “The Taiwan Strait is an international waterway, meaning that the Taiwan Strait is an area where high-seas freedoms, including freedom of navigation and overflight, are guaranteed under international law.” 

Interpreting UNCLOS, status of Taiwan

But the term “international waters” does not appear in the foundation of the international order in the oceans, the UN Convention on the Law of the Sea (UNCLOS). It is an invention of the US Navy to connote to its naval commanders waters in which they have “freedom of navigation.”

There are also no legal high seas in the Taiwan Strait. There are territorial seas and contiguous zones. Beyond the territorial sea is an EEZ in which the coastal state has sovereignty over the resources therein and a responsibility to protect the environment.

The issue for the US is whether or not its warships and warplanes have the right of passage. As a non-party to UNCLOS, US rights are unclear. Indeed, it depends on what the US warships and warplanes are doing during that passage, and that is secret. Under UNCLOS, they must pay “due regard” to the rights and duties of the coastal state.

For example, if the warship or warplane is undertaking cyber or electronic “exercises,” this could be viewed as a threat or use of force – not allowed by the UN Charter, let alone UNCLOS. Indeed, the US views some cyber and electronic attacks this way. 

Particularly relevant are active signals intelligence (SIGINT) collection conducted from aircraft and ships, some of which are deliberately provocative, intended to generate responses that can be monitored. Still others may interfere with communication and computer systems. China thinks that some such activities are not consonant with the due-regard and peaceful-purposes provisions of UNCLOS. 

Marine scientific research in an EEZ is subject to the prior consent of the coastal state. If a US warship or warplane is deploying information-collection devices, such as drones or sonobuoys, they may be subject to this prior-consent regime. Again, since the US is not a party to UNCLOS, it has little credibility for legitimately unilaterally interpreting these provisions to its benefit.

The dispute also raises the issue of the status of Taiwan. If Taiwan is part of China as the US “One China Policy” stipulates, then the entire Taiwan Strait is under China’s jurisdiction. The One China Policy recognizes the People’s Republic as the sole legal government of China, but only acknowledges, and does not endorse, the PRC position that Taiwan is part of China. 

If the US is implying by its warships’ passage that Taiwan is not part of China and has separate jurisdiction and regimes governing its claimed portion of the strait, then this challenges China’s sovereignty claim to Taiwan.

US warships and warplanes have the theoretical right to pass through the Taiwan Strait even if China and Taiwan are reunited – provided they pay due regard to China’s rights and duties. Otherwise it may be an “abuse of right” that is prohibited by UNCLOS – in other words using a right for purposes other than that for which it is intended.

But just because it theoretically can does not mean it should. This is a political, not a legal, question. The US knows that these probes and passages anger China. Under current circumstances, at the very least they are provocative.

The US should have expected a response – “professional, safe, legal” in its eyes or not – especially if it was in China’s view not paying due regard to its rights.

The US has repeatedly stated and demonstrated the right for its warships to pass through the Taiwan Strait. This amply protects its legal right to do so. The US needs to consider when enough is enough and whether it wants to risk a dangerous clash to demonstrate this right redundantly.

An edited version of this article first appeared in the South China Morning Post.