Classified US software is helping China get an edge over the former in the hypersonic weapons race, despite tight export controls on such technology. The Washington Post reported this week that blacklisted Chinese military research groups have been purchasing US software designed for computer simulations of hypersonic weapons tests. It uncovered 300 sales since 2019 of advanced software products from nearly 50 US firms to Chinese research groups involved in missile development programs. The report claims that US firms have received millions of dollars in funding from the Pentagon and circumvented US export controls by selling to Chinese private middlemen...