Links
[1] https://civilresistance.info/biblio-item/2000/voyage-lusitania-espresso
[2] https://civilresistance.info/biblio-item/2000/nonviolent-intervention-across-borders-recurrent-vision
[3] https://civilresistance.info/section/introduction-nonviolent-action/5-nonviolent-intervention-and-accompaniment