An investigation by four Nordic public broadcasters has claimed that Russian ships were near the site of the explosion that took out the Nord Stream pipeline. However, there are no shortage of theories about who or what was behind the blast. And exactly how would Moscow benefit from destroying its own pipeline?Guests:Thomas O'DonnellGlobal Fellow of the Wilson CenterTara McCormackLecturer in international relations at the University of Leicester.Alexander TitovLecturer in Modern European History, Queen's University BelfastRoundtable is a discussion programme with an edge. Broadcast out of London and presented by Philip Hampsheir, it’s about bringing people to the table, listening to every opinion, and analysing every point of view. From fierce debate to reflective thinking, Roundtable discussions offer a different perspective on the issues that matter to you. Watch it every weekday at 15:00 GMT on TRT World.