If the current administration is serious about the trade war, sanctions, etc. against China (which seems the case), I have to imagine that someone has thought a

If the current administration is serious about the trade war, sanctions, etc. against China (which seems the case), I have to imagine that someone has thought about what it would take to cut off China from the rest of the Internet. Obviously the fallout from something like this would be incredible, and I'm not advocating for it, but... do we even have the technical capability to do something like this? With the Internet being designed to be resilient, what would it actually take to do this? Can it be done by electronic means rather than by cutting cables / bombing ingress points? They're already quite isolated by the great firewall, but it seems like cutting off everything at once could still be a powerful splash of cold water to the face. It's certainly not going to happen piecemeal when most companies are this spineless.