More than half the Arctic's coastline is Russian territory and in the last six years Moscow has built more than 475 military bases along its northern border.

Nato members have pledged to spend at least 2% of the value of their economies on defence per year by 2024, but many have faced criticism for not shelling out enough and leaving the burden on ...

Donald Trump has insisted he "supports" Nato's Article Five amid ongoing tensions between the US president and other members of the military alliance over talks to bring an end to the Ukraine war.