It seems Iceland and the international community has a conundrum: should they keep national boundaries defined by natural features in their locations from the mid 20th century, should they update them and take away land, or should they force countries to dump riprap or concrete on these habitats to hold back the sea? I know China has dumped huge quantities of sand to form semi-artificial islands, which is its own problem, but I'd hope the UK and Iceland could come to an agreement that preserves both the environment and the borders.