How significant is the US-Iran prisoners swap deal?

A prisoner swap between the U.S. and Iran. It's a rare agreement between two nations, long at odds on nearly all fronts. So does this deal signal a new dawn in relations? 

Join Host Mohammed Jamjoom

Guests: 

Foad Izadi - Head of the American Studies Department, University of Tehran.

Roxane Farmanfarmaian - Lecturer in Modern Middle East Politics, University of Cambridge.

Scott Lucas - Professor of U.S. and International Relations, University College Dublin.