Lord Mountbatten, 1st Earl Mountbatten of Burma, was a British Royal Navy officer and statesman, an uncle of Prince Philip, Duke of Edinburgh, and second cousin once removed of Queen Elizabeth II. 

On August 27th 1979, Mountbatten, his grandson Nicholas, and two others were killed by a bomb in Mullaghmore, County Sligo, Ireland, which had been hidden aboard his fishing boat by the IRA. 

On the fortieth anniversary of this atrocity Ivan spoke to criminologist John O’Keefe on the contribution that this murder had on the Troubles.