The Rights of War and Peace

by Hugo Grotius

In the same manner legislators, as it was proved in a former book of this treatise, are not accountable, in their legislative capacity, to any human tribunal, for the laws, which they make, yet they cannot, in a moral point of view, avail themselves of this transcendent power to enact a thing that is evidently unjust. In this sense we often meet with a distinction made between what is proper or right, and what is lawful. Thus Cicero, in his speech for Milo, makes the LAW OF NATURE the standard of what is RIGHT, and LEGAL AUTHORITY, the standard of what is lawful.

III. Thus qualified, the annoyance of an enemy, either in his person or property, is lawful. This right extends not only to the power engaged in a just war, and who in her hostilities confines herself within the practice established by the law of nature, but each side without distinction has a right to employ the same means of annoyance. So that any one taken in arms, even in another's territory, cannot be treated as a robber, malefactor, or murderer, nor can even that neutral power, in whose territory he is taken, treat him as an enemy, for being found in arms.

IV. This principle was established by nations to prevent others from interfering in their disputes, or giving the law to them respecting the rights of war. Besides, if this were not the case, neutral powers would frequently be involved in the wars of others. A reason which the people of Marseilles urged in the dispute between Caesar and Pompey. They alleged that they had neither sufficient judgment to determine on which side justice lay, nor, if they could determine, had they strength to give effect to their decisions.

A spectator indeed is but ill qualified to judge, how far, even in the most just war, self-defence, the attainment of indemnity, or the punishment of an aggressor, may be carried. These are points, which, on many, if not most, occasions must be left to the conscience and discretion of the belligerents themselves: a mode far preferable to that of appealing to the mediation, and decision of disinterested and neutral powers. Livy has given an address of the Achaeans to the senate, in which they ask, "how their availing themselves of the rights of war can ever be fairly called in question, or made a subject of discussion?"

Besides the impunity attending certain actions done in war, the acquisition of territory by the right of conquest is another topic of consideration, which will hereafter be examined.

V. The lawfulness of injuring or destroying the person of a public enemy is supported by the testimony of many of the best writers, both poets, moralists, and historians. In one of the tragedies of Euripides, there is a proverb, which says, that "to kill a public enemy, or an enemy in war is no murder." Therefore the custom of the ancient Greeks, which rendered it unlawful and impious to use the same bath, or to partake of the same festivities and sacred rites with a person who had killed another in time of peace, did not extend to any one who had killed a public enemy in war. Killing an enemy is indeed everywhere called a right of war. "The rights of war, says Marcellus in Livy, support me in all that I have done against the enemy." And the same historian gives the address of Alcon to the Saguntines, where he says, "You ought to bear these hardships, rather than suffer your own bodies to be mangled, and your wives and children to be seized and dragged away before your eyes." Cicero in his speech in defence of Marcellus passes a high encomium upon the clemency of Caesar, who, "by the laws of war and the rights of victory, might have put to death all, whom he had spared and protected." And Caesar observes to the Eduans, that "it was an act of kindness in HIM, to spare those whom the laws of war would have authorised him to put to death."

But the rights of war, for which these writers plead, could not PERFECTLY JUSTIFY the putting prisoners to death, but could only grant IMPUNITY to those who availed themselves of the barbarous custom. There is a wide difference however between actions like these, and destroying an enemy by proper means of hostility. For, as Tacitus says, "in the leisure hours of peace the merits and demerits of every case may be examined and weighed, but, in the tumult and confusion of war, the innocent must fall with the guilty": and the same writer, in another place, observes, that "there are many actions, which the principles of humanity cannot ENTIRELY approve, but which the policy of war requires." And it is in this, and no other sense that Lucan has said, "the complexion of right may be assigned to what is wrong."

VI. This right of making lawful what is done in war is of great extent. For in the first place it comprises, in the number of enemies, not only those who actually bear arms, or who are immediately subjects of the belligerent power, but even all who are within the hostile territories, as appears from the form given by Livy, who says, that "war is declared against the sovereign, and all within his jurisdiction." For which a very good reason may be assigned; because danger is to be apprehended even from THEM, which, in a continued and regular war, establishes the right now under discussion.

Reprisals do not come exactly under the same rule. For like taxes, they were introduced for the discharge of public debts, for no part of which temporary residents, or foreigners are answerable. Therefore Baldus is right in his observation, that, after war is actually begun, much greater latitude is allowed, than in the bare right of making reprisals. So that what is said of foreigners, who enter into an enemy's country, and reside there, after war is avowedly declared and begun, is undoubtedly true.

VII. But persons, who had gone to reside there before the war was begun, seem by the law of nations to be included in the number of enemies, unless within a reasonable time they chuse to withdraw. So that the Corcyraeans, when going to besiege Epidamnus, gave leave to all strangers to withdraw, denouncing that they would otherwise be treated as enemies.