Gary is a Senior Research Fellow at the Kennedy Institute for Conflict Intervention at Maynooth University in Ireland. 

An Adjunct Professor at the Candler School of Theology at Emory University in Atlanta, Georgia, lecturing on lessons from the NI peace process. 

Gary has also been appointed as a faculty advisor to the Negotiation Strategies Institute a Harvard University programme for leaders in the Israeli/Palestinian Context. This programme seeks to equip these leaders with negotiation skills using the Irish peace process as a model. 

He has lectured in a number of academic contexts from political think tanks to universities such as Harvard, Boston College, Boston University, Tufts, Emory University, Duke University, University of Alabama, Florida Southern College, Birmingham Southern College, Fairmont State University, Wesleyan WV, Rollins College, St. Cloud University, St. JohnUniversity, Hamline University.