TikTok went dark for American users in an unprecedented display of the U.S.-China divide over technology and national security.The app started halting service Saturday night for 170 million users in its most important market shortly before a law took effect requiring it to shed its Chinese ownership or close in the U.

Trump said he will “most likely” give TikTok a 90-day extension to comply with a law requiring the social media app to shut down in the U.S