“Albanianism,” wrote the 19th-century poet Pashko Vasa, was his country’s one true faith. Not many outsiders will get the reference, but Albania’s troubled history seems to have produced a particularly rugged and enduring national identity. British pop star Dua Lipa once incited a minor social media furor by posting a map of “Greater Albania” that included large chunks of the country’s neighbors. Lipa was born in Britain, but her parents are eth…