Eliza Manningham-Buller on Abraham Lincoln

This week it's the turn of a former director of MI5, Eliza Manningham-Buller, who tells Matthew Parris why she regards Abraham Lincoln as a great life. But will her hero stand up to intensive scrutiny and merit the description of having led a great life? The expert is Dr Tony Hutchison, from the American Studies Department at the University of Nottingham. The producer is Perminder Khatkar.