China is threatening what it calls “further actions” after an American fighter jet shot down a suspected spy balloon off the East Coast of the United States on Saturday. The U.S. says the massive balloon was a surveillance craft that spent days crossing over sensitive military sites in North America. The White House says President Joe Biden approved the downing, and followed the advice of military officials by waiting to bring down the craft over water rather than risk debris falling on populated areas. But China’s Ministry of Foreign Affairs insists again that the craft was civilian and its flight an accident. It is criticizing the U.S. for what it terms “an obvious overreaction and a serious violation of international practice.”