According to the Treaty of Versailles, article 228, the German Government itself “recognized the right to the Allied and associated powers to bring before military tribunals persons accused of offenses against the laws and customs of war. Such persons who might be found guilty were to be sentenced to punishments ‘laid down by law’.”[584] Some Germans were, in fact, tried for the commission of such crimes.
The foregoing considerations demonstrate that the principle nullum crimen sine lege, when properly understood and applied, constitutes no legal or moral barrier to prosecution in the case at bar.
CRIMES AGAINST HUMANITY AS VIOLATIVE OF INTERNATIONAL LAW
C. C. Law 10 is not limited to the punishment of persons guilty of violating the laws and customs of war in the narrow sense; furthermore, it can no longer be said that violations of the laws and customs of war are the only offenses recognized by common international law. The force of circumstance, the grim fact of world-wide interdependence, and the moral pressure of public opinion have resulted in international recognition that certain crimes against humanity committed by Nazi authority against German nationals constituted violations not alone of statute but also of common international law. We quote:
“If a state is unhampered in its activities that affect the interests of any other, it is due to the circumstance that the practice of nations has not established that the welfare of the international society is adversely affected thereby. Hence that society has not been incited or aroused to endeavor to impose restraints; and by its law none are imposed. The Covenant of the League of Nations takes exact cognizance of the situation in its reference to disputes ‘which arise out of a matter which by international law is solely within the domestic jurisdiction’ of a party thereto. It is that law which as a product of the acquiescence of states permits the particular activity of the individual state to be deemed a domestic one.
“In as much as changing estimates are to be anticipated, and as the evolution of thought in this regard appears to be constant and is perhaps now more obvious than at any time since the United States came into being, the circumstance that at any given period the solution of a particular question is by international law deemed to be solely within the control or jurisdiction of one state, gives frail assurance that it will always be so regarded.“[585]
“The family of nations is not unconcerned with the life and experience of the private individual in his relationships with the state of which he is a national. Evidence of concern has become increasingly abundant since World War I, and is reflected in treaties through which that conflict was brought to a close, particularly in provisions designed to safeguard the racial, linguistic and religious minorities inhabiting the territories of certain states, and in the terms of part XIII of the Treaty of Versailles, of June 28, 1919, in respect to labour, as well as in article XXIII of that treaty embraced in the Covenant of the League of Nations.”[586]
“The nature and extent of the latitude accorded a state in the treatment of its own nationals has been observed elsewhere. It has been seen that certain forms or degrees of harsh treatment of such individuals may be deemed to attain an international significance because of their direct and adverse effect upon the rights and interests of the outside world. For that reason it would be unscientific to declare at this day that tyrannical conduct, or massacres, or religious persecutions are wholly unrelated to the foreign relations of the territorial sovereign which is guilty of them. If it can be shown that such acts are immediately and necessarily injurious to the nationals of a particular foreign state, grounds for interference by it may be acknowledged. Again, the society of nations, acting collectively, may not unreasonably maintain that a state yielding to such excesses renders itself unfit to perform its international obligations, especially in so far as they pertain to the protection of foreign life and property within its domain.[587] The property of interference obviously demands in every case a convincing showing that there is in fact a causal connection between the harsh treatment complained of, and the outside state that essays to thwart it.
The international concern over the commission of crimes against humanity has been greatly intensified in recent years. The fact of such concern is not a recent phenomenon, however. England, France, and Russia intervened to end the atrocities in the Greco-Turkish warfare in 1827.[588]
President Van Buren, through his Secretary of State, intervened with the Sultan of Turkey in 1840 in behalf of the persecuted Jews of Damascus and Rhodes.[589]