There are no winners in war, only losers. We have so far avoided a third world war, but across the globe regional conflicts flare up in a seemingly unstoppable cycle. Who can stand between the armed camps? Over six decades, Martin Bell has stood in eighteen war zones - as a soldier, a reporter and a UNICEF ambassador. Now he looks back on our efforts to keep the peace since the end of the Second World War and the birth of the United Nations...