Yes or somehow block transactions with bitcoin nodes on the internet somehow
This is crap. Only ordinary citizens will be affected. Criminals will operate out of crypto havens like El Salvador 😖
Banning exchanges could be accomplished. Most would see it as a nuclear option though. It seems more probable that some form of key registration will be used to control the currency flow.
So, KYC of your key
But couldn't you use VPN to bypass this if you had your own node