Key event

First Taiwan Strait Crisis

1954–55 Essential Kinmen

What happened

PRC forces shell Kinmen and take the Yijiangshan islands, prompting the United States and the ROC to conclude a Mutual Defense Treaty in December 1954 and the US Congress to pass the Formosa Resolution. The crisis subsides in 1955 without general war.

The first crisis established the pattern the system still follows: pressure applied to the periphery rather than the centre, calibrated to test the strength of an outside commitment without triggering a war. Seventy years later the instruments have changed and the logic has not.

Confidence: High

When1954–55
WhereKinmen
KindMilitary · Diplomatic
ArenaOutlying islands

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Connected records

2 records that this event names, or that name it — every one an explicit reference in a published record, nothing inferred from subject matter.

Part of1

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Where this fits

This is one entry in the Taiwan Strait timeline. The full Key Events surface carries every dated turning point with its filters and its essential subset, and this event in place shows what came before and after it. How Vigil grades, dates and sources its claims is set out in the methodology.