Im curious… how much undersea cable traffic could Starlink handle? I know the sat-sat laser links are just coming online now, what if every sat had them

And otherwise, you can't eliminate the possibility of local sabotage as well. Most of the important networking information in Sweden was leaked due to our "open information" laws.

It's not like Russia can make it some long-term problem, but being an annoyance and making chaos is their goal.

Maybe the local internet would keep working but the countries wouldnt. Lots of stuff stops working without central web authorities and all international trade and payment systems would collapse. It would be a massive catastrophe. But its probably quite hard to take out everything at once before the militaries of the world would start paying special attention to those cables.