Exclusive interview: Tony Blair, Bill Clinton, Bertie Ahern

25 years ago, the Good Friday agreement ended decades of violence and brought peace to Northern Ireland. The architects of that ground-breaking pact were former British Prime Minister Tony Blair, former US President Bill Clinton and former Irish Prime Minister Bertie Ahern. In a historic reunion, Blair, Clinton & Ahern sat down with Christiane for an exclusive interview reflecting on the hard choices they made all those years ago and preserving peace and stability today.  Also on today's show: Author Clint Smith discusses his new book of poetry, Above Ground, which deals with the emotional ups and downs of raising a family in today's modern world.  To learn more about how CNN protects listener privacy, visit cnn.com/privacy Learn more about your ad choices. Visit podcastchoices.com/adchoices