The U.S. and Canada have agreed to begin negotiations over claims to an Arctic seabed that may be rich in oil and is of growing strategic importance as Russia and China ramp up their presence in the North.
The two countries have overlapping claims to the seabed north of Alaska, Yukon and Northwest Territories, which is thought to contain significant oil reserves.
The Arctic is also a region that has become increasingly accessible due to climate change and has drawn greater interest from Russia and China.
In a statement, the U.S. and Canadian governments say they will work collaboratively toward a final agreement to clarify their Arctic maritime boundaries.