The world’s biggest military powers are all jockeying for position in and around the Arctic, starkly illustrated by Donald Trump’s demands for the US to buy Greenland even though it’s  already NATO territory.

Sitrep explains the melting pot of strategic positioning, potential trade routes, and natural resources that are driving shows of military force, including by the UK, in the High North.

Arctic expert Professor Caroline Kennedy-Pipe tells us the US can already put as many military bases as it wants in Greenland, but that the race for minerals also really matters for military power. And Professor Michael Clarke reveals the weapon of choice for Canadian troops in the Arctic, to defend themselves from polar bears.