US President Joe Biden has signed a bill to ban TikTok, starting a nine-month countdown until the social media app's Chinese parent company ByteDance will be forced to sell it or have it removed from US app stores. However, TikTok CEO has challenged the ban and is confident that they will win. NDTV's Parmeshwar Bawa discusses the implications of the ban with Dr Tara Kartha, former director, National Security Council Secretariat.
