Off-topic

To address the technological issues, we need to know context such as what it is we are trying to solve. There is quite a difference between virtually no central government where everyone must defend what they call "theirs" than if we have some sort of democratic collective body with very large military controls, and where the latter may be hostile to large groups of individuals to varying degrees.

As imitev's comments suggest (in a higher up subthread), we might face a much more tractable problem if we can focus situations where the dominant force is only likely to get very aggressive against the people it "serves" when it is a governmental unit of force small in relative size to the overall global community.