UN General Assembly
1950

7. The Members of the United Nations know that in acting thus they have not been used as tools to assist or conceal a war of conquest or a colonial war, but have done so in order that the United Nations Charter, collective security and the repelling of aggression, may serve as a rampart today and become a vital and convincing reality in the future. 8. The statement made by the United States representative at our [279th] meeting on 20 September is therefore significant; he urged us to strengthen the system of collective security and told us: “Our best hope of peace lies in our ability to make it absolutely plain to potential aggressors that aggression does not succeed”. 9. This appeal to collective security however has one inevitable consequence: peace and collective security are indivisible. Aggression must be quelled by collective action whoever the aggressor may be, not only when it strikes in the north but also when anyone seeks to impose his will by force whether it be in the south, in the east or in the west.