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I think you under-estimate the amount of undersea cables that cross the Atlantic.

https://www.submarinecablemap.com

Even if someone went crazy and tried to sever all of them, traffic is still going to flow, it's just going to take a different and slower route.

The cables can be fixed in a reasonable amount of time, so there is little incentive for anyone to even attempt this.



I’m just curious. Is there a reliable method of quickly identifying where the cable was severed?


Broken fibres bounce light back. The time it takes for a pulse to return can be used to estimate the location of the break pretty accurately.


https://en.wikipedia.org/wiki/Optical_time-domain_reflectome...


Not only that, but the traffic would also be routed via the pacific. I don't believe there is any way to remove US/Europe without also removing Russia... or any country.

Even taking out New Zealand or Australia would be a serious challenge.




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