So, with that in mind, I'd like to paint a picture of AnCapistan, A country with no borders, a land with no government, a place where there's only one law:
"No one may threaten or commit violence ('aggress') against another man's person or property. Violence may be employed only against the man who commits such violence; that is, only defensively against the aggressive violence of another. In short, no violence may be employed against a nonaggressor."
We also have to define property rights. If I grab the shirt you're wearing, am I the aggressor? Well, it depends. If you stole the shirt from me yesterday then you're the aggressor and I'm just reclaiming my property. If you own the shirt though, I'm the aggressor. We have to detail property rights before we can sort out who is the aggressor. The theory of property rights we advocate is homesteading and legitimate title transfer. You can claim unowned property by mixing your labor with it or you can transfer the title to already owned property by any legitimate means, gifts, gambling, trade, etc.