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As the world seems to worry ever more about security - one risk to our safety is deep beneath the water. Undersea cables carry our key communications - including the internet and are crucial to everything we do online.

A new report is warning the UK should do more to protect the cables which are under potential threat.

In this podcast we hear from Rishi Sunak MP, author of the report "Indispensable but insecure - why protecting undersea cables will save the internet" and Robert Hannigan, former director of GCHQ.

(Image: Undersea cables in Spain, credit: Getty Images)