
Since early September, China has been carrying out the most provocative and sustained show of force in the Taiwan Strait in nearly a quarter century. Chinese military patrols, some involving more than 30 combat aircraft and a half-dozen naval ships, have roamed the strait roughly every other day. Many of them have breached the median line between Taiwan and China, a boundary that—until last year—both sides had respected for decades.
With cross-strait tensions rising, a growing number of American policymakers and pundits, mostly on the political right and center, are calling on the United States to guarantee Taiwan’s security—a firm commitment that the United States has avoided making for more than four decades. These calls build on a series of bipartisan laws passed over the past two years that strengthen America’s moral and diplomatic support for Taiwan in the face of Chinese pressure. But can Taiwan actually be defended?