The fatal objection to any alliance of this kind is that it does not really meet the difficulty that no State will abandon its sovereignty. This alliance would not be a League of Peace unless it were prepared to exercise a very sharp supervision over the foreign policy of its members. If the old Anglo-Franco-Russian entente had been a genuine League of Peace, it would have had to say, for example, to Serbia, “You may join us, but if you do join us, you must abandon forever your Irredentist ambitions at the expense of Austria. We will protect you against any unprovoked attack by Austria. But you on your side must refrain from any encouragement to those who would dismember her.” It would have had to say with equal decision to France, “Join us by all means, but at the cost of refraining from any expansion in Morocco. You cannot march on Fez without provoking some German reply.” Such a League, in short, would be a mutual insurance society, but the risks would be too high unless the society could prohibit its members from any deliberate playing with fire. It is not enough to say, “We will murder an Archduke once in a way, but when he is dead and buried we will go to The Hague about him”; or, “We will, to be sure, take places in the sun which other people covet, but when we have taken them we shall not wantonly attack any unsuccessful rivals.” The League of Peace would either be the old imperialistic alliance under a dishonest name, or else it would be a highly conservative federation which would keep its members in a very strait pacifist jacket. If great powers would really endure such a control they might as well face at once the limitation of sovereignty implied in a United States of Europe. [Sidenote: All interests must be reconciled.]