US blacklists 5 Chinese groups working in supercomputing

The United States is blacklisting five Chinese organizations involved in supercomputing with military-related applications, citing national security as justification for denying its Asian geopolitical rival access to critical U.S. technology.The move Friday by the U.S. Commerce Department could complicate talks next week between President Donald Trump and his Chinese counterpart, Xi Jinping, aimed at de-escalating a trade dispute between the world's two biggest economies.The five blacklisted org