https://www.reuters.com/article/us-tiktok-ceo/tiktok-ceo-kevin-mayer-quits-after-less-than-three-months-as-u-s-plans-ban-idUSKBN25N0DV

TikTok Chief Executive Officer Kevin Mayer has left short video app firm just three months since joining - and days after TikTok sued the administration of U.S. President Donald Trump over an executive order banning transactions with it in the country.