§ 36. Acts of reprisal may nowadays be performed only by State organs such as armed forces, or men-of-war, or administrative officials, in compliance with a special order of their State. But in former times private individuals used to perform acts of reprisal. Such private acts of reprisal seem to have been in vogue in antiquity, for there existed a law in Athens according to which the relatives of an Athenian murdered abroad had, in case the foreign State refused punishment or extradition of the murderer, the right to seize and to bring before the Athenian Courts three citizens of such foreign State (so-called ἀνδροληψία). During the Middle Ages, and even in modern times to the end of the eighteenth century, States used to grant so-called "Letters of Marque" to such of their subjects as had been injured abroad either by a foreign State itself or its citizens without being able to get redress. These Letters of Marque authorised the bearer to acts of self-help against the State concerned, its citizens and their property, for the purpose of obtaining satisfaction for the wrong sustained. In later times, however, States themselves also performed acts of reprisal. Thereby acts of reprisal on the part of private individuals fell more and more into disuse, and finally disappeared totally with the end of the eighteenth century. The distinction between general and special reprisals, which used formerly to be drawn, is based on the fact that in former times a State could either authorise a single private individual to perform an act of reprisal (special reprisals), or command its armed forces to perform all kinds of such acts (general reprisals). The term "General Reprisals" is by Great Britain nowadays used for the authorisation of the British fleet to seize in time of war all enemy ships and goods. Phillimore (III. § 10) cites the following Order in Council of March 27, 1854: "Her Majesty having determined to afford active assistance to her ally, His Highness the Sultan of the Ottoman Empire, for the protection of his dominions against the encroachments and unprovoked aggression of His Imperial Majesty the Emperor of All the Russias, Her Majesty is therefore pleased, by and with the advice of Her Privy Council, to order, and it is hereby ordered, that general reprisals be granted against the ships, vessels, and goods of the Emperor of All the Russias, and of his subjects, or others inhabiting within any of his countries, territories or dominions, so that Her Majesty's fleets may lawfully seize all ships, vessels, and goods," &c.
Objects of Reprisals.
§ 37. An act of reprisal may be performed against anything and everything that belongs or is due to the delinquent State or its citizens. Ships sailing under its flag may be seized, treaties concluded with it may be suspended, a part of its territory may be militarily occupied, goods belonging to it or to its citizens may be seized, and the like. Thus in 1895 Great Britain ordered a fleet to land forces at Corinto and to occupy the custom-house and other Government buildings as an act of reprisal against Nicaragua; again, in 1901 France ordered a fleet to seize the island of Mitylene as an act of reprisal against Turkey; and in 1908 Holland ordered a squadron to seize two public Venezuelan vessels as an act of reprisal against Venezuela.[36] The persons of the officials and even of the private citizens of the delinquent State are not excluded from the possible objects of reprisals. Thus, when in 1740 the Empress Anne of Russia arrested without just cause the Baron de Stackelberg, a natural-born Russian subject, who had, however, become naturalised in Prussia by entering the latter's service, Frederick II. of Prussia seized by way of reprisal two Russian subjects and detained them until Stackelberg was liberated. But it must be emphasised that the only act of reprisal admissible with regard to foreign officials or citizens is arrest; they must not be treated like criminals, but like hostages, and under no condition or circumstance may they be executed or subjected to punishment of any kind.
The rule that anything and everything belonging to the delinquent State may be made the object of reprisals has, however, exceptions; for instance, individuals enjoying the privilege of exterritoriality while abroad, such as heads of States and diplomatic envoys, may not be made the object of reprisals, although this has occasionally been done in practice.[37] In regard to another exception—namely, public debts of such State as intends performing reprisals—unanimity does not exist either in theory or in practice. When Frederick II. of Prussia in 1752, by way of negative reprisals for an alleged injustice of British Prize Courts against Prussian subjects, refused the payment of the Silesian loan due to English creditors, Great Britain, in addition to denying the question that there was at all a just cause for reprisals, maintained that public debts may not be made the object of reprisals. English jurists and others, as, for instance, Vattel (II. § 344), consent to this, but German writers dissent.[38]
[37] See the case reported in Martens, Causes Célèbres, I. p. 35.
[38] See Phillimore, III. § 22, in contradistinction to Heffter, § 111, note 5. The case is reported with all its details in Martens, Causes Célèbres, II. pp. 97-168. The dispute was settled in 1756—see below, § [437]—through Great Britain paying an indemnity of £20,000.
Positive and Negative Reprisals.
§ 38. Reprisals can be positive or negative. One speaks of positive reprisals when such acts are performed as would under ordinary circumstances involve an international delinquency. On the other hand, negative reprisals consist of refusals to perform such acts as are under ordinary circumstances obligatory; when, for instance, the fulfilment of a treaty obligation or the payment of a debt is refused.
Reprisals must be proportionate.