history of int law

HistoryMain article: History of public international law

The public international law originates in the Peace of Westphalia in Osnabrück and Münster (1648)Beginning with the Peace of Westphalia in 1648, the 17th, 18th and 19th centuries saw the growth of the concept of the sovereign "nation-state", which consisted of a nation controlled by a centralized system of government. The concept of nationalism became increasingly important as people began to see themselves as citizens of a particular nation with a distinct national identity. Until the mid-19th century, relations between nation-states were dictated by treaty, agreements to behave in a certain way towards another state, unenforceable except by force, and not binding except as matters of honor and faithfulness. But treaties alone became increasingly toothless and wars became increasingly destructive, most markedly towards civilians, and civilized peoples decried their horrors, leading to calls for regulation of the acts of states, especially in times of war.

Perhaps the first instrument of modern public international law was the Lieber Code, passed in 1863 by the Congress of the United States, to govern the conduct of US forces during the United States Civil War and considered to be the first written recitation of the rules and articles of war, adhered to by all civilized nations, the precursor of public international law. Part of the Code follows:

"Military necessity, as understood by modern civilized nations, consists in the necessity of those measures which are indispensable for securing the ends of the war, and which are lawful according to the modern law and usages of war. Military necessity admits of all direct destruction of life or limb of armed enemies, and of other persons whose destruction is incidentally unavoidable in the armed contests of the war; it allows of the capturing of every armed enemy, and every enemy of importance to the hostile government, or of peculiar danger to the captor; it allows of all destruction of property, and obstruction of the ways and channels of traffic, travel, or communication, and of all withholding of sustenance or means of life from the enemy; of the appropriation of whatever an enemy's country affords necessary for the subsistence and safety of the Army, and of such deception as does not involve the breaking of good faith either positively pledged, regarding agreements entered into during the war, or supposed by the modern law of war to exist. (...But...) Men who take up arms against one another in public war do not cease on this account to be moral beings, responsible to one another and to God. Military necessity does not admit of cruelty—that is, the infliction of suffering for the sake of suffering or for revenge, nor of maiming or wounding except in fight, nor of torture to extort confessions. It does not admit of the use of poison in any way, nor of the wanton devastation of a district. It admits of deception, but disclaims acts of perfidy; and, in general, military necessity does not include any act of hostility which makes the return to peace unnecessarily difficult."

This first statement of the previously uncodified rules and articles of war led to the first prosecution for war crimes—in the case of United States prisoners of war held in cruel and depraved conditions at Andersonville, Georgia, in which the Confederate commandant of that camp was tried and hanged, the only Confederate soldier to be punished by death in the aftermath of the entire Civil War.

In the years that followed, other states subscribed to limitations of their conduct, and numerous other treaties and bodies were created to regulate the conduct of states towards one another in terms of these treaties, including, but not limited to, the Permanent Court of Arbitration in 1899; the Hague and Geneva Conventions, the first of which was passed in 1907; the International Court of Justice in 1921; the Genocide Convention; and the International Criminal Court, in the late 1990s. Because international law is a relatively new area of law its development and propriety in applicable areas are often subject to dispute