It goes something along the line that a State can proclaim R areas outside the 12 mile limit, but it has no authority to keep other State aircraft out of the area. They do have authority over civil aircraft from their own state.. .. .Put another way, Australia can proclaim R areas outside the limit, but if the US or any other state aircraft chooses to operate in that area then they can do so and there is zip that the Australian authorities can do about it. However.. if you are an Australian pilot/Aircraft then the same rules apply as to R areas within the state boundary.. .. .This was subject to much discussion during the PRD review held in the mid '90's. The recommendations I think are still bogged down within the DoD.. .. .Will post some extracts on return home later in week if interest is still there.