China’s test of a hypersonic missile worries America

IN LATE JULY a Chinese Long March rocket streaked into space, much like the dozens that took off last year. But having begun to orbit the Earth, this rocket’s payload then lurched downwards, glided through the upper atmosphere and finally crashed to the ground. American officials were stunned, says the Financial Times, which recently broke news that this had been a test of a nuclear-capable hypersonic glider (China denies it). China conducted another such experiment a couple of weeks later, says the newspaper.