HARDtalk speaks to a man who in Northern Ireland is often referred to simply as 'Junior.' Testament to the giant political shadow cast by his father and namesake Ian Paisley - the Protestant pastor, and firebrand unionist politician who ultimately played a key role in Northern Ireland's peace process. Now Ian Paisley junior is forging his own political career but Northern Ireland's unionists are divided; peace and power sharing haven't made them happy. Why?