@Awsomur I think you're forgetting the Bolsheviks.

Also, and armed rebellion can overthrow a government and create their own, like the American Revolution.
@BACconcordepilot

Antarctica isn’t. But it’s under treaty.
@BACconcordepilot

@Tully2001 and maybe NATO?

@BACconcordepilot and maybe some L-39s...

@BACconcordepilot I'm pretty sure I can invade with air power alone with some warbird-registered MiG-19s and -21s.