[Fearless Leader]

You do realize that some governments have their own internet right? Where all the access points are protected by vault doors and/or armed guards.
Also, the US government has multiple "internet" type networks entirely separate from our internet.
http://en.wikipedia.org/wiki/SIPRNet
http://en.wikipedia.org/wiki/Joint_Worldwide_Intelligence_Communications_System
http://en.wikipedia.org/wiki/RIPR
... and those are just the ones we are allowed to know about.

[NGTM-1R]

You do realize that some governments have their own internet right? Where all the access points are protected by vault doors and/or armed guards.

I know a great deal about US information security measures and how they work since they're peripherally involved in my job. I also know that the State Department is **** at them, which is pretty much how they've done things since before WW1.

There are actually very few isolated networks in peacetime.