2Christopher M.Petras."Space force alpha"military use of the international space station and the concept of peaceful purpose"[J].Air Force Law Review.2002,vol.53:177.
3Sean R.Mikula.Blue Helmets in the next frontier:the future is now[J].Georgia Journal of International and Comparative Law.2001 ,win:548,.
4See Staninir A. Alexandrov, Self-Defense against the Use of Force in International Law, P. 100.
5Oscar Schachter, International Law in Theory-and Practice, P. 151. 1991.
6See Case concerming Military and Paramilitary Activities in and against Nicaragua (Nicaragua v. United States of America), Merits, Paras.194, 195, June 27, 1986.
7See Ian Blownlie, International Law and the Use of Force by States, P. 367.
8See Tnnothy L. H. Mcconnack, Self-Defense in International Law: the Israelli Raid on the Iraqi Nuclear Reactor, PP. 126---127, 1996.
9See Myres S. Mcdougal, The Soviet-Cuban Quarantine and Self-Defense, 57 AJIL 601 (1963).