History is full of examples of artworks being used to express things diplomats would be forbidden to sayThis week’s masterclass in the renewal of the entente cordiale was based on a genuine desire by two countries to reconnect. But in addition it served as a reminder that diplomacy is not only an art, but art itself has always been an essential tool of diplomacy. So the extended loan of the Bayeux tapestry, exchanged with treasures from Sutton Hoo, is not just a gesture of trust but marks a return to the roots of diplomacy, and its cultural lure.Doubtless security experts will remember the summit’s declarations of new nuclear co-operation while pollsters will eye “the one in, one out” migrant deal to see if it actually turns the political tide in the Channel. But the popular legacy will be the queues forming at the British Museum from September 2026 when the tapestry goes on display, and in Rouen and Caen when the treasures from Sutton Hoo are viewed by the French in what is already being billed as the “Year of the Normans”. True, some Telegraph readers are already spluttering about the French sending a reminder of their conquest of the Anglo-Saxons, or that Britain is just a convenient place to dump the cloth during the two-year closure of the Bayeux Museum, but the British Museum has the prospect of huge crowds to enjoy. Continue reading...