今日の Japan Times にカナダの国際法学者の寄稿があった: Collective self-defense and collective security: what the differences mean for Japan | The Japan Times Online : "As the debate in Japan heats up over whether and how to amend Article 9 of the Constitution, the terms 'collective self-defense' and 'collective security' are often used in the same breath, almost as though they were synonymous. Often the terms are avo