On Start the Week Tom Sutcliffe talks to the former Chief of the General Staff Richard Dannatt about the history of the British Army, its role in present conflicts and relations with NATO. The writer Ben Macintyre reveals the wartime antics of one of the most secret regiments, the SAS and the historian Catherine Merridale recreates Lenin's journey across Europe in the midst of the Great War. John Lough was NATO's first representative based in Moscow and explores the tensions on Russia's borders.

Producer: Katy Hickman.