The First Minister’s comments came amid an ongoing controversy over the decision of two DUP ministers to meet the Loyalist Communities Council.

The authors have created a model with three key factors to explain the persistence and adaptability of terror groups in the region.

International Fund for Ireland chairman Paddy Harte said it is key to allow the benefits of the peace process to reach every area of society.

The number of attacks almost tripled over the last year, compared to the previous year.