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15 July 2025

The 8-point buzzsaw facing any invasion of Taiwan


For the better part of a decade, China has served as the “pacing threat” around which American military planners craft defense policy and, most importantly, budget decisions.

Within that framework, a potential Chinese invasion of Taiwan has become the scenario most often cited as the likeliest flashpoint for a military confrontation between the two superpowers.

In Washington, “China is going to invade Taiwan” has devolved into little more than a talking point these days. While it remains the essential premise underpinning defense policy, very little is generally said about Taiwan itself and its suitability as a stage for major military operations. That seems like an odd omission considering how much energy and resources American officials have expended in preparing to defend the place, including sending billions in direct military aid.

Hundreds of billions have either been spent or pledged to defend Taiwan. Yet Taiwan’s greatest defensive advantage is the main island of Taiwan itself. The island’s terrain is wholly unsuited for the kind of massive military invasion policymakers use to justify defense budget increases resulting is more than $1 trillion American annual defense budgets. A careful study of Taiwan’s geography including on-the-ground observations reveal eight significant challenges an invader would have to overcome to successfully conquer the island.

The following draws from my recent research on the island and will be fleshed out in a forthcoming report from the Stimson Center.

First, an invader would have to cross the Taiwan Strait to reach the island. An invasion force would include huge numbers of people, vehicles, and supplies. The only way to transport the bulk of such a force is with surface shipping which would be extremely vulnerable to submarines, underwater mines, long-range missiles, and now uncrewed attack vessels.


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