The months between May and August 1919 were a crucial time for Afghanistan: it was the period of the Third Anglo-Afghan War followed by the declaration of Afghan independence from Britain. So how was modern Afghan national identity forged? Who were the leaders responsible? Why, in the 19th century, had the country become financially and politically dependent on Britain? And what, a century on, is the legacy Afghanistan's independence struggle? These are some of the issues that Bridget Kendall discusses with historians of Afghanistan, professors Shah Mahmoud Hanifi, Sana Haroon and Benjamin Hopkins. Photo: People hold Afghan flags as they celebrate Afghan Independence Day (Sayed Khodaberdi Sadat/Anadolu Agency/Getty Images)