The latest Sky News 'explainer' on the vulnerability of undersea cables tells us:

Why UK's undersea cables are vulnerable - and Putin has 'pretty good map' of where they are

While separated by 21 miles of water, a web of cables and pipelines nonetheless connects the UK and Europe. Could sabotage to them impact Britain?

It should be quite obvious to Sky and anyone else that undersea cables are vulnerable given that it proved quite easy for someone - and it certainly wasn't Putin - to blow up the Nordstream 2 pipeline and what's more to get away with it.

Undersea cables are well-known 'chokepoints' and surveilling them in international waters is not illegal as everyone does it even if they don't admit to it.

But we need a 'RUSI thinktank expert' to tell us the bleedin' obvious:

Dr Kaushal argued that while there is a degree of redundancy in the undersea cables that serve the UK, the pipelines that bring gas to British homes are perhaps more vulnerable.

"I think in some ways the pipeline network is far more fragile because there we are more reliant on a handful of critical pipelines," he said.

Has he not heard of Nordstream 2?