Two hundred years after the battle of Trafalgar, the navy could end up sharing the pride of its fleet with the French. Driven by spiralling budgets, the two navies began talks last week aimed at sharing their aircraft carriers. The government is expected to give the go-ahead for the Royal Navy’s two new aircraft carriers this week, part of a joint Anglo-French project to build a total of three. The French, who currently have only one carrier, the Charles de Gaulle, are questioning whether they can afford a replacement and are keen to explore closer co-operation with Britain instead. “We...