Nato planners have always worried about the Storskog border crossing in Finnmark, where Arctic Norway comes face to face with Russia. In Soviet times, the 195-km frontier was a potential flashpoint. The Red Banner Northern Fleet’s nucleararmed submarines are still based at nearby Murmansk, on the freezing Barents Sea.
Reasons to worry afresh are multiplying following Vladimir Putin’s invasion of Ukraine. Norwegian police recently arrested several Russians, equipped with drones and cameras and showing an interest in oil and