In brief Two U.S. and Chinese security experts proposed red lines barring AI from independently attacking nuclear systems. The authors also called for a military AI hotline and a shared definition of human control. AI’s speed and uncertain behavior could leave leaders with little time to stop an escalating conflict. Security experts from the United States and China have proposed rules that would bar artificial intelligence from independently launching cyberattacks against nuclear command systems or deciding to use nuclear weapons.A recent report by Brookings and Shanghai-based Fudan University urges the U.S. and China to extend their commitment to human control…