This week on Taking Stock Mandy Johnston talks to Veteran Journalist Dermot Murnaghan ahead of his appearance at the Kennedy Summer School next week and talks to him about his long life in journalism covering some of the defining moments of our time.   Rudy Giuliani has turned himself in to authorities at a jail in Atlanta, Georgia this week. But who is Rudi Guiliani? Mandy looks at one of the most divisive American political figures of our time when she talks to Llyod Green,  a New York Attorney who has served in the US Department of Justice. And finally Finance Minister Michael McGrath is said to be putting pressure on our banking sector to pass on some of their windfall profits to customers - while we wait for the mismatch to be rectified - is there something else you could be doing with your money to get a better return? Mandy talk to Ellie Donnolly Senior Business Reporter at the Business Post.