TikTok: How app got caught up in the US-China clash
With its eclectic mix of viral dance crazes and lip-sync comedy sketches, TikTok has become a phenomenon among young people.
But with strong links to China, it's the latest company to come under attack as tensions between President Xi's China and President Trump's US rise.
The US and Australia are considering banning the app and India has already taken it off app stores.
What is TikTok?
TikTok is a free app like a short-form version of YouTube. Users can post videos up to one minute long and choose from a huge database of songs and filters.
Comedy clips and movie quotes are also on offer for users to lip-sync to.

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