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Leaderless, Cut Off, and Alone: The Risks to Taiwan in the Wake of Ukraine

There would be a powerful rationale for China to seal off Taiwan as quickly and completely as possible, with strategic implications for Japan and the US.

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Republic of China Office of the President
Source: Office of the President, Republic of China (Taiwan) | Government Website Open Information Announcement

“A Taiwan contingency is also a Japan contingency,” said Nobukatsu Kanehara, former assistant chief cabinet secretary (2012-2019) in a May 2021 article analyzing the risks of a Taiwan invasion for Japan. Then came Russia’s war on Ukraine. 

Russia’s invasion of its small neighbor has exposed risks China would face in an invasion of Taiwan, but also options. In this article, reprinted with permission by War on the Rocks, the authors examine the potential Chinese strategies in response to lessons from Ukraine, as well as the implications for the US-Japan alliance and regional security.  

(Coming in part 2: The authors examine the preparations needed by the United States and Japan before a Taiwan contingency is at hand.)

First of 2 parts

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Part 2: Taiwan in the Wake of Ukraine: Implications for the US-Japan Alliance

A 20mm air cannon at the mouth of the Tamsui River on the outskirts of Taipei on June 5, 2018 (photographed by Yasuto Tanaka).

As policymakers and analysts evaluate the war in Europe for insights that might be applicable to Asia, they are reaching three early conclusions: It should serve as a cautionary tale for China, a model for Taiwan, and a playbook for the United States. But what if the conflict yields a more ominous set of lessons — lessons that Beijing could use to seize the island democracy?

Many observers have become more skeptical that China would launch an assault on its “wayward province” after seeing Russia struggle on the battlefield and suffer an economic backlash. Some have become more optimistic that Taiwan could defend its de facto sovereignty as Ukraine imposes heavy costs on invading forces. And others have become more confident that the United States can rely on “integrated deterrence” to manage the threat of Chinese aggression, which was beginning to appear close at hand.

Yet the war in Europe might instead convince Chinese leaders to double down on efforts to shatter Taiwan’s will to resist should deterrence break down. Indeed, Russian failures and Ukrainian successes to date might incentivize China to issue threats and use force earlier to make US military intervention less likely and Taiwanese capitulation more so.

China’s Options 

Specifically, during a war over Taiwan, Chinese leaders could emphasize three courses of action from the very start: 

First, issue nuclear threats to keep US counter-invasion forces on the sidelines and keep the conflict contained. 

Second, impose a blockade to physically isolate the island and raise the escalatory risk of any resupply efforts. 

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Third, attempt to decapitate Taiwan’s political and military leadership to cripple its near-term defenses and undermine longer-term resistance to occupation.

Although each course of action was already plausible before Russia’s invasion, all of them seem more likely in its aftermath. At a minimum, they could sharpen the political, diplomatic, and military dilemmas that would accompany any prospective US intervention; erode Taiwan’s willingness and ability to hold out against an assault; and perhaps convince Chinese leaders that they can compensate for deficiencies in their untested armed forces with adjustments in strategy. 

In the worst case, they might even persuade those leaders that a war over Taiwan would be far easier than the conflict in Ukraine would seem to indicate.

Brinkmanship From the Beginning

One of the most worrisome aspects of the war in Ukraine has been Vladimir Putin’s willingness to rattle the nuclear sabre, both implicitly and explicitly, as a way of deterring outside intervention. From the moment the conflict began, the Russian president warned audiences in other capitals that if they interfered with his “special military operation,” Moscow would “respond immediately, and the consequences will be such as you have never seen in your entire history.” 

Just days later, as the invasion suffered early setbacks, Putin directed his senior defense officials to place Russian strategic forces on “special combat readiness.”

Although these actions have not prevented the United States and its allies from providing arms and intelligence to Ukraine, they have induced caution and colored debates over how to respond. Notably, Washington postponed a planned Minuteman III intercontinental ballistic missile test flight following Russia’s increased alert level. More importantly, US officials have repeatedly equated deploying American troops to Ukraine or enforcing a no-fly zone over the besieged nation with World War III.

Any confrontation between major powers will take place under the nuclear shadow. Yet nuclear weapons are expected to play a major role mainly when a clash is well underway. 

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In the case of Russia, analysts concerned about its escalation threshold — a longstanding topic of debate — have emphasized the possibility that Moscow might resort to nuclear threats, nuclear demonstrations, or limited nuclear employment after its conventional forces fail to deliver a victory on their own. Indeed, these concerns have only increased as Russia’s losses in Ukraine have continued to mount. 

China’s Differences

In the case of China, analysts have similarly suggested that it could be pushed to the nuclear brink should its conventional forces falter, especially if US strikes on dual-use delivery vehicles, surveillance assets, and command-and-control systems are perceived by Beijing as an attempt to degrade its nuclear deterrent.

By contrast, the war in Ukraine seems to increase the likelihood that China might engage in nuclear signaling and nuclear brinkmanship at the very start of a coercive campaign against Taiwan, not just in the later stages of a losing effort. Beijing could engage in what analysts have called “integrated strategic deterrence” to demonstrate its resolve and to shape the risk calculus of its opponents. Such signaling could involve increasing readiness levels, deploying forces, simulating operational preparations, and conducting exercises and tests. 

The goals of these steps would be to instill fear, apply psychological pressure, and create uncertainty.

Doing so could induce greater restraint on the part of the United States, particularly when it comes to direct military intervention, and drive a wedge between Washington and frontline allies like Japan that might find themselves in the immediate crosshairs. Beijing’s growing arsenal of strategic and theater nuclear capabilities only makes this type of scenario more plausible, insofar as a more survivable nuclear deterrent and more limited nuclear options mean that escalatory threats will appear more credible.

Washington on the Front Line

Early nuclear threats could also help to resolve a core strategic dilemma that China would confront during a Taiwan contingency: Strike at the United States early and undermine its ability to intervene or forgo an attack on the United States and undercut its willingness to intervene. 

On the one hand, Beijing could launch conventional attacks on forward-operating US forces at the beginning of a conflict. Although a first strike would degrade Washington’s ability to respond, it would almost certainly guarantee that a military response would be forthcoming. 

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On the other hand, Beijing could leave US forces intact, at least initially, and focus its military campaign on its main target. Although restraint would leave the effectiveness of those forces undiminished, it might also convince Washington to curtail its involvement.

The Nuclear Card

Watching the difficulties that Russia has experienced in Ukraine might tip the scales toward the latter option. After all, a fight against Taiwan could be difficult enough without taking on the United States at the same time. Playing the nuclear card early might make this option even more tempting, though, by further increasing the prospect that the United States would stay out and that the war against Taiwan would stay contained.

A flotilla of Chinese maritime militia "fishing" vessels aggressively entering waters near Senkaku Islands (September 2020)

First Strangle, Then Strike

The war in Ukraine also serves as a stark reminder that a smaller but better motivated defender can fend off a quantitatively and qualitatively superior attacker, particularly when that defender receives critical support from outside parties — and even more so when the attacker is guilty of poor planning and execution. Armed with man-portable air defense and anti-tank weapons supplied by Western nations, along with real-time intelligence from the United States, Ukrainian forces have inflicted a heavy toll on Russia in both personnel and equipment.

These developments are already spurring calls for Washington to accelerate weapons shipments to Taiwan, and for Taipei to stockpile those weapons in advance of a conflict. During a war, moreover, the United States would have strong incentives to replenish Taiwan’s inventory of weapons and help to keep it in the fight. This is especially the case given an emerging consensus among analysts that the ability to conduct a protracted and irregular campaign of resistance should be a key element of Taiwan’s defense strategy.

Ukraine, of course, has the advantage of sharing land borders with NATO members, making resupply of matériel relatively easy, albeit not without risk. As an island nation, however, Taiwan is inherently easier to isolate, especially by an aggressor with considerable air and maritime capabilities. Moreover, the island has only two major ports to the north and south in Keelung and Kaohsiung, respectively, with few alternative locations on its Pacific coast to offload large quantities of goods.

Leading with a Blockade

What might this mean for China? The People’s Liberation Army (PLA) has several options should it try to establish control over Taiwan by force, including amphibious assault, air and missile bombardment, and air and maritime blockade. 

In reality, a campaign against the island would probably include elements of all three. But the lessons of Ukraine could influence the sequencing and level of effort put into them. Simply put, there would be a powerful rationale for China to seal off Taiwan as quickly and completely as possible, making a blockade the tip of the spear — an approach consistent with PLA doctrine.

Taiwan’s defense ministry recently reported that the PLA could conduct a joint blockade campaign to sever the island’s lines of communication, thereby stemming the flow of “military supplies and logistics resources.” 

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To implement a blockade, the PLA could lay mines by sea and air, scuttle ships at key chokepoints, deploy warships and submarines to cordon off Taiwan, and declare air and maritime exclusion zones. It could even engage in a “firepower blockade,” using missiles and air-delivered munitions to bombard shore facilities and ships, either tied up at pierside or in transit.

In this scenario, a blockade would not be aimed primarily at starving out the Taiwanese. Instead, the immediate goal would be to preclude the substantial inflow of supplies, such as air-defense and anti-ship missiles, that could shift the tactical balance toward the defender. The longer-term goals would be to prevent outside parties from sustaining any resistance movement that might emerge if the PLA is able to defeat counter-invasion forces. In either case, moreover, efforts to run a blockade would be extremely risky if the cordon were accompanied by clear nuclear threats.

Maritime Militia

Leading with a blockade in a prelude to a larger air and missile campaign and an all-out invasion would offer an added benefit for China. Mobilizing for an assault, especially an amphibious operation, would be difficult to disguise (another potential lesson from the war in Ukraine). 

A blockade, by contrast, could probably be implemented more rapidly under the guise of fleet or missile exercises; air, maritime, or undersea incursions; civilian or paramilitary fleet deployments; or some combination of these tactics. Beijing could thus begin to coerce Taiwan across localized offshore and inshore areas with comparatively little warning.

The United States and its allies might struggle to formulate effective diplomatic and military countermeasures against such calibrated, lower-intensity coercion, buying time for China to build up its invasion force and allowing Beijing to retain the initiative. Meanwhile, the wider mobilization would still pose a menacing threat in the background, as its expected completion would give China the hammer to bring down on Taiwan and furnish Beijing with more coercive leverage.

Taiwan President Tsai Ing-wen

Aiming for the Head

A final aspect of the war in Ukraine that stands out, and that could reshape how China approaches a conflict with Taiwan, is the importance of leadership. Most importantly, Ukrainian President Volodymyr Zelenskyy has, from humble beginnings, emerged as an impressive wartime leader who refused to flee the country or its capital and continues to motivate his people and marshal international support for their cause. 

Likewise, local leaders have been lauded for their steadfastness and bravery. Russia, it seems, clearly recognizes the significance of these individuals, as evidenced by alleged assassination attempts against Zelenskyy and the kidnapping of Melitopol’s mayor. For its part, China might learn a similar lesson.

Decapitation Operations

Indeed, PLA writings have held up “decapitation operations” as an important element of a larger campaign to subdue Taiwan. The Chinese National Defense University’s 2020 Science of Military Strategy calls for delivering “heavy blows” against “military and political leaders,” command and control networks, politically symbolic sites, and so forth as major targets of “system destruction warfare.” 

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Eliminating political and military leaders through the use of fifth column saboteurs, special operations units, and missile bombardment against key sites would, at a minimum, disrupt Taiwanese command and control, making it more difficult to mount an effective defense.

Taiwanese defense officials have warned about this threat. In fact, they take the danger so seriously that they have stood up a joint unit dedicated to countering attempts at eliminating the leadership. 

Taipei has good reason to fear such high-value targeting. Through decapitation, the PLA would kill or capture national and local leaders who could otherwise maintain command and control of forces, serve as a symbol of organized resistance, galvanize international support, and lead the transition from conventional conflict to insurgency, should it become necessary. 

If successful, a decapitation operation could snuff out an incipient national movement that girds the Taiwanese for a long fight, brightening the PLA’s prospects for a quick victory.

Learning a Dangerous Set of Lessons

The violence that Russia has unleashed upon Ukraine is hard to fathom. But the difficulties it has encountered so far have raised hopes in some corners that similar acts of aggression might be avoided elsewhere, particularly Northeast Asia. 

Unfortunately, there are reasons to doubt that China will suddenly embrace restraint when it comes to its dealings with Taiwan. Given their apparent determination to absorb the island, Chinese leaders might instead learn a dangerous set of lessons from the war in Eastern Europe, even if they judge that a military assault might be harder than they had anticipated, and that the international backlash to aggression might be more severe than they had hoped.

Doubling Down

Rather than set their aims aside, Chinese leaders might opt to adjust their methods or even double down on their preferred strategies. That could involve making nuclear threats right from the start to put the United States on the back foot and give allies like Japan cold feet. 

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It could also entail imposing an air and maritime blockade against Taiwan to seal off the island at the outset and ensure that Washington would need to put its own forces in harm’s way to provide Taiwan with material assistance. And it could require early decapitation attacks on national and local leaders to disrupt Taiwan’s defenses and remove key figures that the international community could work with and rally behind.

A series of early blows that left Taiwan leaderless, cut off, and alone could be psychologically devastating to the defenders, shattering their will to resist. China could then more easily maneuver the island into submission without prolonged fighting, an ideal outcome for Chinese policymakers and commanders. 

Even if the Taiwanese proved to be more resilient than anticipated and refused to buckle under intense pressure, Beijing would still be able to fall back on its military might to impose its will on the island.

Brinksmanship, Blockade and Decapitation

Brinkmanship, blockade, and decapitation are well documented in PLA writings, so they are hardly new to US planners watching the Chinese military. However, the timing and sequencing of these actions would likely put US officials in a difficult bind on several fronts from the get-go. 

China could frontload its coercive efforts to maximize its first-mover advantage, keep the United States off balance, and force US officials to react rapidly to fast-moving events. Moreover, Beijing would put the onus on Washington to make the next escalatory moves. 

American policymakers would have to match or outdo Chinese demonstrations of resolve and run a blockade in the opening phases of a Chinese campaign against Taiwan. More troubling, they would have little recourse should the PLA successfully decapitate the Taiwanese leadership.

To keep pace with these earlier-than-expected political and military challenges, US leaders would have to assume much greater risks at the outset and make weighty decisions sooner and faster than they would otherwise prefer. Conversely, inaction, indecision, or tepid responses could help China set the conditions of the conflict while foreclosing American options.

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Continues in part 2 .

This article was originally published on April 5, 2022 by War on the Rocks, a leading US online journal on strategy, defense, and foreign affairs.

Authors: Evan Montgomery and Toshi Yoshihara

Evan Braden Montgomery is the director of Research and Studies at the Center for Strategic and Budgetary Assessments (CSBA). Toshi Yoshihara is a Senior Fellow at CSBA and is the recipient of the 2021 Kokkiken Japan Study Award. Find other articles by Dr. Yoshihara and about CSBA on JAPAN Forward.

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