Britain’s decision last summer to exit the European Union — Brexit — has already produced any number of unforeseen consequences. One such suddenly splashed itself across the front pages of the world’s newspapers last week, when Spain and the United Kingdom headed towards a confrontation over tiny Gibraltar. The Rock of Gibraltar, perched at the entry to the Mediterranean with a population of 30,000 people and 300 monkeys, is one of the last remnants of the British Empire. It’s ironic that Brexit, a decision that was draped by its defenders in imperial nostalgia, may finally end one of the last