Kinmen Island sits approximately 3.5 kilometers from the Chinese city of Xiamen. On a clear day, residents of Kinmen can see the skyline of a Chinese city of five million people across a strip of water narrower than the distance between Manhattan and Staten Island. Taiwan has administered Kinmen since 1949, when Nationalist forces successfully repelled a PLA amphibious assault that, if successful, might have changed the entire trajectory of the civil war’s outcome. The island has been shelled, blockaded, and fought over. It is still Taiwanese. Its continued existence as a piece of Taiwanese territory three kilometers from the Chinese mainland is one of the more remarkable geopolitical facts of the twentieth and twenty-first centuries.