Taiwan's $35 Billion Bet: Building Deterrence Without Washington's Guarantee

The timing could not have been more pointed. On August 16, Taiwan wrapped up Han Kuang 42 — by most accounts the most ambitious military exercise in the island’s history. Within 72 hours, Taiwan’s President Lai Ching-te announced that his government would propose a record defense budget for 2027, calling the investment “a commitment to peace.” And on August 21, Breaking Defense reported that the figure had landed at $35 billion — the largest military spending proposal in Taiwan’s history, requiring approval from an opposition-controlled legislature.

None of this happened in a vacuum. The same week, on the other side of the Pacific, President Trump ordered the Pentagon to scale back joint military exercises with South Korea, the decades-old training programs that underpin the US-Korea alliance. Trump called the drills “costly” and, in a social media post, said they sent “a signal that is completely inappropriate and hostile” — hostile, he meant, to Kim Jong Un.

In Taipei, officials have learned to read the gap between what Washington says and what it does. The $35 billion budget is their answer.

Han Kuang 42: A War Game That Meant It

Taiwan’s annual Han Kuang exercises have long doubled as both genuine training and political theater — a signal to Beijing that the island takes its defense seriously. This year’s iteration, Han Kuang 42, appears to have crossed from theater into something more operationally urgent.

Taiwan launched its first live-fire exercises using first-person view drones during the war games — a capability that has reshaped battlefield dynamics in Ukraine and Gaza. The exercises ran whole-of-society: civil defense agencies, emergency services, and military units operating together under simulated wartime conditions. Military analyst Mick Ryan, writing for Futura Doctrina, argued the exercise carries lessons for the entire democratic world.

The backdrop was unmistakable. On August 19, Taiwan’s military tracked 20 Chinese military aircraft and 13 ships operating around the island in a single day — a level of activity that has become routine but that defense analysts describe as sustained attrition designed to test response times, deplete personnel, and map detection gaps.

The Budget: What $35 Billion Buys

Taiwan’s proposed 2027 defense budget represents an 18 percent increase over the current year, according to Reuters. The figure of $35 billion in US dollar terms, confirmed by Breaking Defense, would push Taiwan’s defense spending to roughly 4 percent of GDP — a level comparable to Poland’s wartime-footing commitments, and well above the NATO 2 percent benchmark that the Trump administration has made a political litmus test for alliance commitment.

The money buys three things in particular.

First, drones — lots of them. Taiwan’s drone industrial base has been a persistent weakness, as this desk has reported previously. The “hellscape” strategy of swarming the Taiwan Strait with autonomous systems to deny a Chinese amphibious force its critical first hours depends on Taiwan being able to manufacture, stockpile, and field drones faster than they can be destroyed. Funding is the bottleneck.

Second, hardened command and communications infrastructure. Chinese gray-zone operations in the weeks surrounding Han Kuang 42 included undersea cable damage near Taiwan that raised explicit concerns about sabotage. A Chinese research vessel was spotted operating near Taiwan’s largest naval base in late August, prompting Taiwan to shadow and warn off the ship. The pattern suggests systematic defense mapping. Redundant communications that survive the first strikes matter more than any single weapons platform.

Third, the budget sends a message to Washington — and to Beijing. Taiwan spending $35 billion on defense is Taiwan demonstrating that it is not a passive protectorate waiting for rescue. It is a proposition to the United States: we will carry our share; will you carry yours?

The Trump Variable

That question has no clean answer in the current American political moment.

Trump’s decision to curtail US-South Korea exercises — reviving a position he held in his first term — was framed publicly as a cost-saving measure and a goodwill gesture toward Pyongyang. Breaking Defense reported Trump described the exercises as “costly” and “hostile” to North Korea. AP reported the South Korean president was left stressing the importance of the US alliance while “many” in Seoul were described as “baffled” by the order.

If the US-Korea alliance — cemented by 70 years of shared history, 28,500 American troops on the peninsula, and formal treaty obligations — can be unilaterally degraded by a president seeking to impress an adversary, Taiwan’s security planners would be irrational not to draw conclusions about their own position.

Xi Jinping and Trump are expected to meet in the coming weeks. Xi notably skipped the UN General Assembly ahead of the summit, suggesting direct bilateral engagement is the priority. The agenda is understood to include trade, fentanyl, and — unavoidably — Taiwan.

One day before this analysis was filed, a US Navy aircraft transited the Taiwan Strait in what Reuters described as occurring “before the planned Xi-Trump meeting.” The transit is a standard freedom-of-navigation operation, but its timing was almost certainly deliberate — a signal to Beijing that Washington retains an interest in the strait’s status even as a summit approaches. The signal is meaningful precisely because it might otherwise need to be made.

As an earlier analysis on this desk explored, the Taiwan Strait is now governed by a triangular deterrence geometry in which each actor’s moves are read through the lens of the others. Trump’s Korea pivot is being read by Taipei as evidence of what that geometry looks like when Washington prioritizes deal-making.

What Gray Zone Looks Like in Practice

While the budget debates play out, China’s military pressure on Taiwan has not paused for diplomatic niceties.

The pattern this week: a Chinese research vessel operating near Zuoying Naval Base — Taiwan’s largest naval facility — was shadowed and warned off. Undersea cable damage near the island raised concerns about deliberate sabotage designed to degrade communications in any conflict’s opening hours. Daily aircraft and ship incursions continued at a tempo that has become normalized but that serves a specific operational purpose: mapping Taiwan’s detection and response capabilities, wearing down aircrew and command staff, and establishing a baseline of activity that would mask the opening moves of an actual contingency.

Russia’s acceleration of China’s military modernization, documented in analysis earlier this month, provides the context for why Taiwan’s defense planners are treating this moment as structurally different from previous cycles of cross-strait tension. The gap between PLA capabilities and Taiwan’s defenses is narrowing. The window for self-defense investment is not unlimited.

What to Watch

The legislature. Taiwan’s $35 billion budget proposal must be approved by an opposition-controlled Legislative Yuan. The Kuomintang has historically been skeptical of defense spending increases and more open to engagement with Beijing. Whether the budget passes, and at what figure, will reveal whether Taiwan’s political system can move as fast as its security situation requires.

The Xi-Trump summit. Any summit communiqué that uses language about “one China” without an equally explicit restatement of US arms sales commitments to Taiwan will be read by Beijing as tacit permission. Watch the exact language — the gap between “acknowledge” and “recognize” has mattered in Taiwan diplomacy for 50 years.

The gray-zone tempo. China’s operational pattern around Taiwan — research vessels, cable incidents, aircraft incursions — tends to intensify in the period immediately before and after major diplomatic events. If incursions escalate around the Xi-Trump summit window, it signals that Beijing is using the summit as cover, not restraint.

Taiwan’s $35 billion bet is, at its core, a wager that self-reliance is the only guarantee that reliably holds. Whether the legislature approves it, whether Washington stays engaged, and whether Beijing decides the moment calls for pressure or patience will define the Taiwan Strait’s trajectory into 2027 and beyond.