FILE - In this Feb. 5, 2020, file photo, Lockheed Martin's Robert Balserak, Lead Executive, Air Superiority Programs, explains the capabilities of the F-21 at the DefExpo in Lucknow, India. China's government said Monday, Oct. 26, 2020, it will impose sanctions on U.S. military contractors including Boeing Co.'s defense unit and Lockheed Martin Corp. for supplying weapons to rival Taiwan, stepping up a feud with Washington over security and Beijing's strategic ambitions. (AP Photo/Rajesh Kumar Singh, File)
China's government says it will impose sanctions on US military contractors, including Boeing Co's defence unit and Lockheed Martin Corp for supplying weapons to rival Taiwan. AP Photo/Rajesh Kumar SiShow more

US announces $2.4bn sale of coastal defence systems to Taiwan