I. The Rationale of the Veto
At the time of San Francisco, and intermittently since, five separate but interrelated arguments have been advanced to support the veto privilege: I) that the terms of Article 27 (3) of the Charter, by requiring big power negotiations before a vote is taken, in fact guarantee preservation of international peace; 2) that, since big powers cannot and will not submit to being voted into a war by small and medium states, the chain of events theory is valid and a big power should be permitted to exercise a veto on a subject which might eventually lead to enforcement action by the United Nations; 3) that the veto acts as a kind of safety valve preserving the status quo and preventing controversial changes which might cause conflict among the Big Five; 4) that the veto enables states in a minority position to protect their vital interests against infringement by the majority; and finally, 5) that the veto has, in fact, been used as a bargaining weapon by small states or by a minority.