A BBC News Magazine special on Captain Mbaye Diagne, a Muslim from Senegal's army with the UN peacekeepers as an unarmed military observer:http://www.bbc.co.uk/news/special/20...954/index.html

An official estimate by the State Department in Washington, which in 2011 honoured Mbaye with a Tribute To Persons Of Courage certificate, says the figure is “as many as 600”.

But the American Fulbright Scholar Richard Siegler, who lives in Rwanda and plans to publish a book on Mbaye, thinks the correct figure may be 1,000 or more.