In his dissertation the religious framing of nonviolent action by the strategist of the Indian anti-colonial movement, Mohandas K. Gandhi, is reinterpreted with the help of modern social science and given a secular conceptualisation.
He has written or edited eight books and numerous articles, among the most recent: Nonviolent Resistance and Culture, 2012 (with M. Sørensen) in Peace & Change, and Tackling Trident (by Irene Publishing).
Since 2000 he has been an active participant in the global justice movement and the World Social Forum, and since 2010 a member of the Council of War Resisters’ International (WRI).
2011 he was on the boat Juliano and blocked by the Greek Coast Guard, and in 2012, he was, together with others on board the ship Estelle while sailing on international water outside of Gaza, shot repeatedly by an electric gun and arrested by the Israeli navy.
The Freedom Flotilla is described by the UN special rapporteur Richard A. Falk as the single most important liberation action since the start of the occupation of Palestine[citation needed].