British scientists say they have drawn up the first detailed map to show areas in the Arctic that could become embroiled in future border disputes.
A team from Durham University compiled the outline of potential hotspots by basing the design on historical and ongoing arguments over ownership.
Russian scientists caused outrage last year when they planted their national flag on the seabed at the North Pole.
The UK researchers hope the map will inform politicians and policy makers.
"Its primary purpose is to inform discussions and debates because, frankly, there has been a lot of rubbish about who can claim (sovereignty) over what," explained Martin Pratt, director of the university's International Boundaries Research Unit (IBRU).
"To be honest, most of the other maps that I have seen in the media have been very simple," he added.
"We have attempted to show all known claims; agreed boundaries and one thing that has not appeared on any other maps, which is the number of areas that could be claimed by Canada, Denmark and the US."