Although your ideas are possible on paper, I just don't see bitcoin becoming the saving grace that ends all wars. The powers that be will do whatever it takes to preserve that power.
I agree with this 100%. The only way to end aggression is through the use of force (ironically). There is no lasting, peaceful way to prevent other people from coming and trying to take your shit by force (under the pretense of the "greater good").
You only have as much liberty and freedom as you are willing to defend physically.