Right of Intervention

Right of Intervention by Third States and War as ultima Ratio

Lassa Oppenheim, in the book entitled The Future of International Law, about Right of Intervention by Third States and War as ultima Ratio, wrote in 1921: 66. If, however, in spite of all, it should happen that a state declined such acceptance of an award, the powers who were not parties would have and would use the right of intervention. For there can be no doubt of the fact that all states which took part in the erection of an international court would have a right to intervene if a state which entered an appearance before an international court should refuse to accept its award. And of course, in such a case, war is always waiting in the background as an ultima ratio; but it is in the background only that it waits; while, apart from the erection of an international court, it is standing in the foreground. The whole problem shows that the development in question cannot be rushed, but must proceed slowly and continuously. Step can follow step. The economic and other interests of states are more powerful than the will of the power-wielders of the day. These interests have begotten the law of nations, have driven states to arbitration, have called forth the establishment of a Permanent Court of Arbitration at The Hague, and are now at work compelling the erection of international courts. Let us arm ourselves with patience and allow these interests to widen their sway; they will bring about a voluntary submission to the judgments of the international court on the part of all states.