It's by no means complete but it looks like there are only 5-7 places Iran connects to the undersea fiber optic cable network. If they had control of those they

It's by no means complete but it looks like there are only 5-7 places Iran connects to the undersea fiber optic cable network. If they had control of those they could easily just restrict access. The network level is very resilient but the physical layer is where governments can really exercise control.