Germany will propose setting up a joint Nato mission to monitor and protect security interests in the Arctic region in a bid to ease tensions with the US over its threats to annex Greenland, according to two people familiar with the government’s thinking. Nato’s “Baltic Sentry” mission – begun a year ago to shield critical infrastructure in the Baltic Sea – could serve as a blueprint for a new “Arctic Sentry” mission, which would include Greenland, said people who declined to be identified...