The Fifth TransAtlantic Business Ethics Conference entitled “Business Ethics and Corporate Sustainability” was held at the SDA Bocconi School of Management in Milan from October 3-4, 2008, in Milan. During the conference Laszlo Zsolnai presented his book project on “Just War – Just Business (An Inquiry into the Conditions of Legitimacy of Companies).” He suggested that the Just War theory provides an excellent methodological device for determining the conditions of legitimacy of companies.