Why is US threatening to ban TikTok and will other countries follow suit?

Joe Biden signs into law bill requiring Chinese owner to sell app's US operations

• Senate passes bill banning TikTok if owner does not sell it

Joe Biden has signed into law a bill that requires TikTok's Chinese owner to sell the social media app's US operations or face a ban, after the Senate passed the legislation.

The law, part of a foreign aid package for Ukraine, Israel and Taiwan, sets the clock ticking on a potential ban for a platform that is hugely popular in the US.