While China has long opposed U.S. arms exports to Taiwan, the Trump administration’s latest sales are worrying to Beijing for another reason: They show a greater alignment among the two democracies on the so-called “hedgehog” strategy to resist an invasion. To counter the latest U.S. weapons sale, China could do more military exercises, live-fire incidents or make moves to threaten outlying Taiwanese islands, according to Dr Wu Shang-Su, a Research Fellow at RSIS.