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The US is ordering all federal agencies to delete TikTok from government issued mobile phones, in a move to address security concerns.
It follows the same decision by the EU and Canada, with worries that the Chinese owned app could be used for spying.
China's foreign ministry spokeswoman Mao Ning claims the US is abusing national power.
Tech journalist and TikTok expert Chris Stokel-Walker spoke to Corin Dann.