Pena, José Antonio, and Iván Medina. “New Social Movement, International Security, and the New Social Protest. The Rise and Fall of Pacifism”. UNISCI Discussion Papers, no. 28 (February 10, 2012): 171–181. Accessed July 23, 2026. https://revistas.ucm.es/index.php/UNIS/article/view/38471.