Those vulnerable cables
The people who own navies are pretty much the only ones who can cut undersea cables. Unfortunately they are also the ones most likely to feel the motivation. While there are a few individual decent people in governments, the latter as a whole behave like paranoid sociopaths - and that's even before the Orange Idiot came along.
I think I'd like to see more cables, over a variety of routes, plus more methods for carrying web traffic by other means.
Example: If the cretin in the White House blunders his way into trouble with China over Taiwan, and if China decides on a partial (withdrawable, deniable, de-escalatable) blockade of Taiwan, don't you think the latter's cables will be severed pronto?