TikTok twist: China warns of no sale of its U.S. business

<p>From the BBC World Service: The status of TikTok&#8217;s U.S. operations is uncertain as China looks set to block any sale to a U.S. tech firm. But is a partnership happening instead? Also, another geopolitical tech row over the planned sale of the U.K. chip designer Arm to U.S. firm Nvidia. And, Yoshihide Suga is set to take over as Japan&#8217;s new prime minister.</p>