The Promise Nobody Can Keep: Taiwan, Ukraine, and the Geography of Empty Alliances

On 19 May 2026, Mikhail Podolyak, an adviser to Ukrainian President Volodymyr Zelenskyy, said something that briefly electrified the geopolitically obsessed corners of social media. If the United States declined to defend Taiwan in a confrontation with China, Ukraine would step in. The statement, delivered via Telegram by the Russian-language military channel Two Majors, landed as a kind of geopolitical dare—part genuine expression of solidarity, part provocation aimed at Washington. It also, quietly, revealed something uncomfortable about Taiwan's position in the world order.

Taiwan does not have allies. It has transactional relationships, unofficial representations, and the persistent goodwill of democracies that have concluded, for now, that a Chinese seizure of the island would be destabilizing. What it does not have is a treaty obligation from any major power to fight and die for its survival. The gap between the warmth of diplomatic rhetoric and the cold machinery of military commitment is where Taiwan has lived for decades—and where it will continue to live regardless of who offers to fill the vacuum.

Halfway and Besieged

President Lai Ching-te on 19 May marked the midpoint of his four-year term, according to Nikkei Asia's preview of his administration. He assumed office in May 2024. His Democratic Progressive Party has governed Taiwan since 2016, and Lai himself served as vice president under Tsai Ing-wen before her term limits forced the transition. The context for his midpoint assessment is bleak: Taiwan faces growing diplomatic attrition, sustained military pressure from Beijing, and a renewed round of trade and technology restrictions imposed by the mainland.

Tsai Ing-wen's eight years in office produced a net loss of nine diplomatic partners, whittled down as Beijing systematically poached Taiwan's remaining de facto embassies. Honduras switched recognition in March 2023. The Vatican, which had maintained formal ties with Taipei for decades, signaled in 2024 that it was exploring a deal with Beijing. Each departure is a diplomatic wound—not because the lost embassy matters economically, but because it ratifies Beijing's claim that Taiwan is not a separate international entity worth recognizing as such.

Lai has taken a harder line than his predecessor on cross-strait relations. His inaugural address in May 2024 explicitly described the two sides of the Taiwan Strait as "not subordinate to each other," a formulation Beijing condemned as secessionist. Since then, Chinese military activity around the island has continued at elevated levels: regular air incursions into Taiwan's Air Defense Identification Zone, naval exercises simulating blockade scenarios, and increasingly sophisticated amphibious landing drills. The PLA's 2025 military exercises around Taiwan, conducted in the immediate aftermath of Lai's inauguration, made the operational reality of coercion unmistakable.

What Lai cannot do is fix the structural problem. Taiwan's economy is deeply integrated with China's: the mainland is both its largest trading partner and the destination for the majority of Taiwan's outbound investment. That interdependence is a deterrent of sorts—Beijing cannot seize an island whose semiconductor supply chain it depends on—but it is also a vulnerability. Beijing has shown willingness to weaponize economic ties when political pressure fails, as the embargo on pineapple imports from Taiwan in 2021 demonstrated.

The Geography of Promises

Ukraine's offer to defend Taiwan, however sincere, exposes a fundamental geographical absurdity. Ukraine is fighting a land war 7,000 kilometers from the Taiwan Strait. Its military has developed expertise in drone warfare, electronic warfare, and defensive infantry tactics against a mechanized adversary—skills specific to the European theater. Taiwan's defense scenario is a maritime and air contest: an invader must cross or isolate the Taiwan Strait, establish air superiority, and execute an amphibious landing against a defended coastline. The Ukrainian military, for all its hard-won expertise, has no naval fleet capable of projecting power into the Western Pacific. The offer is solidarity dressed as strategy.

This is not to dismiss the symbolic weight. That a country under invasion would extend its hand to another democracy facing pressure is not nothing. It speaks to a certain logic of international solidarity that has become more visible since Russia's full-scale invasion of Ukraine in February 2022. But symbolism and strategy are not interchangeable, and the gap between them is where policy actually operates.

The United States remains Taiwan's most consequential security partner, though that relationship is governed by the Taiwan Relations Act of 1979 rather than a mutual defense treaty. The TRA obligates the United States to provide Taiwan with defensive arms and to maintain the capacity to resist force, but it stops deliberately short of promising American troops would defend the island. Presidents have interpreted this commitment variously. The Trump administration's approach, still taking shape in 2026, has introduced new uncertainty. The administration's trade war posture toward Beijing, its demands for semiconductor supply chain relocation, and its transactional framing of alliance relationships have all complicated the question of whether American security guarantees would hold under pressure.

The core problem is strategic ambiguity itself. The policy exists precisely because a clear commitment to fight China over Taiwan would destabilize the entire Pacific, while a clear statement that the US would not fight would invite Chinese calculation that the island was retrievable at acceptable cost. Ambiguity is meant to make that calculation impossible. It also means that when a crisis comes, Taiwan's survival depends on a US presidential judgment made in real time, under conditions of uncertainty, with no obligation except what policy and law have constructed.

Beijing's Quiet Leverage

If the Western approach to Taiwan is defined by what it will not say, Beijing's approach is defined by what it does: steadily, methodically, building the military capacity to take the island by force if the political cost becomes acceptable.

The PLA Navy has surpassed the US Navy in hull count, though not in overall capability. The People's Liberation Army has deployed hypersonic missiles specifically designed to hold American carrier strike groups at risk—denying the US the forward-deployed power projection that has anchored Pacific security for decades. The dual-carrier exercises conducted in 2025 in the Taiwan Strait sent a clear operational message: China is practicing the mechanics of a blockade and invasion scenario, not just theorizing about it.

Beijing's leverage extends beyond the military. It is economic, diplomatic, and institutional. China is Taiwan's largest trading partner. It holds substantial US dollar assets and is the largest foreign holder of US Treasury securities—giving it a degree of financial leverage in any confrontation. It occupies a permanent seat on the UN Security Council with veto power. And it has spent the past two decades systematically building a coalition of states willing to support its core positions on sovereignty and territorial integrity, including on Taiwan, by tying those positions to their own concerns about Western intervention in internal affairs.

This is not propaganda—it is geopolitical reality. The Global South's response to the Ukraine war has demonstrated that the Western consensus on territorial integrity has limits when applied by powers that view themselves as victims of Western intervention. Beijing has been a beneficiary of that recalibration. It has not been aggressive in exploiting it—that would require expending political capital—but the option exists.

Taiwan's semiconductor industry is the most frequently cited deterrent. TSMC produces the overwhelming majority of the world's most advanced chips. Disruption to that supply chain would cascade through every economy that depends on advanced electronics—meaning every economy. Beijing knows this. Washington knows this. The strategic logic suggests that China cannot take Taiwan by force without devastating its own economy and the global economy on which its own development depends. That logic has held so far. Whether it continues to hold depends on factors that are genuinely uncertain: Chinese economic growth trajectories, domestic political pressures, the evolution of chip manufacturing elsewhere, and the degree to which Chinese leadership comes to view the Taiwan question as a legacy issue that cannot be deferred.

The Stakes Ahead

Taiwan in 2026 occupies a position of extraordinary economic importance and extraordinary political vulnerability. Its chip fabs are the most valuable real estate on earth. Its diplomatic standing is constrained by the decisions of other capitals. Its military is well-equipped but small. And the gap between the warmth of democratic solidarity and the cold calculus of military commitment is as wide today as it has ever been.

The Lai administration faces a second half of term defined by three compounding pressures. First, the military threat from Beijing will continue to mature as the PLA's capabilities advance. Second, the diplomatic attrition will continue as Beijing poaches the remaining partners Taipei can ill afford to lose. Third, the US security umbrella that has anchored Taiwan's deterrence for decades faces renewed scrutiny under an administration that has made transactional relationships a governing philosophy.

The Czech Republic parliament's 2023 vote to recognize Taiwan was a genuine signal of democratic solidarity—small in formal terms, significant in political ones. Lithuania's decision to open a Taiwanese representative office in 2021 cost it whatever remained of its commercial relationship with Beijing. These are real gestures from real democracies. They also illustrate the ceiling on Taiwan's international support: European capitals will signal sympathy, but none will risk their commercial and diplomatic relationship with China for Taipei.

Ukraine's offer to defend Taiwan belongs in this category of symbolic solidarity rather than operational commitment. It says something about where Ukraine sees itself in the world, and about the logic of democratic solidarity in an era when both democracies are under pressure from authoritarian powers. It says nothing useful about Taiwan's actual defense, which will depend on the island's own capabilities, the credibility of the American deterrent, and ultimately Beijing's calculation of whether the cost of force is worth paying.

The geography of alliances has not changed. Promises made at a distance, without the legal architecture of treaty obligations and without the military assets to back them up, are promises in name only. Taiwan has learned to live in that space. The question for the second half of Lai's term is whether the world that has sustained that equilibrium will remain stable—or whether the moment arrives when Beijing concludes that the cost of waiting has become higher than the cost of acting.

Wire provenance

This editorial synthesis draws on the following public wire/social posts:

• https://t.me/Two_Majors/12456
• https://t.me/nikkeiasia/19823