> TSMC is the only card Taiwan has

In the way Ukraine’s only card is its mineral wealth, sure.

Taiwan is the Belgium of the American security system. If our guarantees are useless there, they’re useless everywhere and new global security guarantors are needed. If Taiwan falls, moreover, China has unconstrained access to the Pacific. That brings the next conflict closer to American shores. It also threatens American naval power globally given our reliance on Korean and Japanese shipyards.