Telegraph: Forget the North Sea and the Middle East, it is the frozen oceans of the Arctic which are the next great frontier that big oil companies plan to exploit over the coming 15 years.
The Arctic region, which crosses several national boundaries including Russia, Alaska, Norway and Greenland, is thought by energy consultants Wood Mackenzie to hold an estimated 166bn barrels of oil equivalent in terms of reserves.
That's more petroleum and gas than Iran holds and enough to meet two-thirds of the world's...