America blacklists China's best artificial-intelligence firms

FOR TWO years reports of mass incarceration have seeped out of the remote Chinese province of Xinjiang. Over 1m people, mainly Uighurs and other Muslim minorities, have been locked up in camps. Millions more live under a police state. American officials, fearful of upending trade negotiations, have dithered over a response. On October 7th, three days ahead of the 13th round of talks, they put their foot down.