The British Commander on the ground admits that the war against the Taliban cannot be won by force alone in this eye-opening assessment of our progress in the Afghanistan conflict. Propaganda footage of suicide bombings, roadside explosions and equipment seized from British troops shows how the Taliban's tactics have changed. Alastair Leithead, who has spent three years visiting the ever fluctuating front-line, looks at the successes and failures in a conflict that has cost more than 120 British lives, and questions what the end game will be.