Exactly what is "national sovereignity" when an agency of force arbitrarily declares some portion of the open seas theirs. That is piracy itself. No one owns or has a right to control by force anything they have not earned or produced by their own effort. Let the Aussies catch the sharks and fish, then thy own them, otherwise they are nobodies property, and to claim them without earning the right to them is theft.
Hank
Non initiation of force might be a cool goal within a sovereign group that hasn't been dumb enough to collectively disarm itself (i.e. is strong enough to resist all of the other sovereign groups around it), but to even think for a moment that it's a conceivable philosophy with respect to other large "sovereignities" is just mental masturbation. As another poster put it, where do you draw the line? Is is OK if they peacefully just fish but not steal your cattle? The same concept applies to the cattle. By what "right" did someone make them theirs? Obviously, they were just "appropriated" at some time from nature. So was the steel in your car, mind if I just "take it for a spin"?...