Russia flexes muscles in challenge for Arctic control

The Russian military cargo plane flew us almost to the top of the world, to an archipelago once best known for its rare bird species and its walruses.

Now Franz Josef Land is home to a Russian military base and the source of added tension in relations with the West.

The US has once again accused Moscow of "militarising" the Arctic and the head of Russia's Northern Fleet has told the BBC that Nato and US military activity in the region is "definitely" provocative and on a scale not seen since World War Two.