On May 15, 2018, under a sunny sky, Russian President Vladimir Putin drove a bright orange truck in a convoy of construction vehicles for the opening of the Kerch Bridge from Russia to Crimea. At 11 miles long, it is now the longest bridge in either Europe or Russia. As Putin drove across the bridge, something weird happened. The satellite navigation systems in the control rooms of more than 24 ships anchored nearby suddenly started displaying false information about their location. Their GPS systems told their captains they were anchored more than 65 kilometres away — on land, at the...