This has nothing to do with cyber warfare. Its just pushing the envelope towards full censorship of the internet. They get the systems in place, they run drills to get the population used to the idea, then they close specific sectors, then they close everything and have special "open sectors" and then you're fucked. Don't fall for it.
Like it or not, but Facebook and Google sitting in the US, collecting massive amounts of private data from people all over the world, while the NSA just taps straight into exchanges, like the DE-CIX, means that the Internet is an inherently very hostile place to any non-Five eyes [0] actors.
It's also for those above reasons that Russia and China have massive local social media alternatives, they don't want their citizen's data to end up on US servers.
For countries like Russia and China, it's actually important to make sure their digital infrastructure doesn't fall apart the moment a US company, or those aligned with Five-Eye interests, decide to shut them out.