History of public international law
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The history of international law examines the evolution of state practice and the doctrinal developments in international law. In that respect, it is different from international private law and comparative history of constitutional law. Although international law in the modern sense of the word has only existed since about the 16th century, many historians of international law also take ancient history into account as a source for the early development of damn legal principles. In that respect, important concepts are derived from the practice between Greek city-states and the Roman law concept of ius gentium (which regulated contacts between Roman citizens and non-Roman people). These principles where not universal however. In East Asia, political theory was based not on the equality of states, but rather the cosmological supremacy of the Emperor of China.
The Roman Empire did not develop an international law, as it acted without regard to any external rules in its dealings with those territories that were not already part of the empire. The Romans did, however, form municipal laws governing the interactions between private Roman citizens and foreigners. These laws, called the jus gentium (as opposed to the jus civile governing interactions between citizens) codified some ideas of basic fairness, and attributed some rules to an objective, independent "natural law." These jus gentium ideas of fairness and natural law have survived and are reflected in modern international law.
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[edit] Nation-states
After the fall of the Roman Empire and the collapse of the Holy Roman Empire into independent cities, principalities, kingdoms and nations, for the first time there was a real need for rules of conduct between a large international community. Without an empire or a dominant religious leadership to moderate and direct international dealings, most of Europe looked to Justinian's code of law from the Roman Empire, and the canon law of the Catholic Church for inspiration.
International trade was the real catalyst for the development of objective rules of behavior between states. Without a code of conduct, there was little to guarantee trade or protect the merchants of one state from the actions of another. Economic self-interest drove the evolution of common international trade rules, and most importantly the rules and customs of maritime law.
As international trade, exploration and warfare became more involved and complex, the need for common international customs and practices became even more important. The Hanseatic League of the more than 150 entities in what is now Germany developed many useful international customs, which facilitated trade and communication among other things. The Italian city-states developed diplomatic rules, as they began sending ambassadors to foreign capitals. Treaties -- agreements between governments intended to be binding -- became a useful tool to protect commerce. The horrors of the Thirty Years' War, meanwhile, created an outcry for rules of combat that would protect civilian communities.
[edit] Hugo Grotius
International practices, customs, rules and treaties proliferated to the point of complexity. Several scholars sought to compile them all into organized treatises. The most important of these was Hugo Grotius, whose treatise De Jure Belli, Ac Pacis Libri Tres is considered the starting point for modern international law. Before Hugo Grotius, most European thinkers treated law as something independent of mankind, with its own existence. Some laws were invented by men, but ultimately they reflected the essential natural law. Grotius was no different, except in one important respect: Unlike the earlier thinkers, who believed that the natural law was imposed by a deity, Grotius believed that the natural law came from an essential universal reason, common to all men.
This rationalist perspective enabled Grotius to posit several rational principles underlying law. Law was not imposed from above, but rather derived from principles. Foundation principles included the axioms that promises must be kept, and that harming another requires restitution. These two principles have served as the basis for much of subsequent international law. Apart from natural-law principles, Grotius also dealt with international custom, rules of what "ought to be" done. This positivist approach to international law strengthened over time. As nations became the predominant form of state in Europe, and their man-made laws became more important than religious doctrines and philosophies, the law of what "is" similarly became more important than the law of what "ought to be."
[edit] Treaty of Westphalia
The Westphalian treaties of 1648 were a turning point in establishing the principle of state sovereignty as a cornerstone of the international order. However the first attempts at formulating autonomous theories of international law occurred before this, in Spain, in the 16th century. Most prominent among the early theorizers were the Roman Catholic theologians Francisco de Vitoria and Francisco Suárez. Suárez is especially notable in this regard in that he treatise on international law, de iure belli ac pacis, which dealt with the laws of war and peace. One important aspect of Grotius's treatment of international law is that he no longer bases it exclusively upon natural law, but also accepts that states among themselves can also create binding rules of law (ius voluntarium).
Still, in the 17th and 18th centuries, the idea of natural law as a basis for international law remained influential, and were further expressed in the works of Samuel von Pufendorf and Christian Wolff. Yet, in the second half of the 18th century, a shift occurs towards positivism in international law. In addition, the idea of international law as a means for maintaining international peace is challenged due to the increasing tensions between the European great powers (France, Prussia, Great-Britain, Russia and Austria). This tension between legal norms and political imperatives is well reflected in the century's most important treatise on international law, Emer de Vattel's Du Droit des Gens (1758). At the end of the century, Immanuel Kant believes that international law as a law that can justify war does not serve the purpose of peace anymore, and therefore argues in Perpetual Peace (Zum Ewigen Frieden, 1795) and the Metaphysics of Morals (Metaphysik der Sitten, 1797) for creating a new kind of international law.
After World War I, an attempt was made to establish such a new international law of peace, of which the League of Nations was considered to be one of the cornerstones, but this attempt failed unfortunately. The Charter of the United Nations (1945) in fact reflects the fact that the traditional notion of state sovereignty remains the key concept in the law of nations.
In the historiography of international law, some German authors, most notably among them Wilhelm Grewe and Karl-Heinz Ziegler, have argued that several periods can be distinguished, such as the Spanish era (1494-1648), the French era (1648-1789/1815), the English era (1789/1815-1919) and the American era since 1919. The transitions between these eras are often marked by grand peace settlements, such as the earlier mentioned treaties of Westphalia (1645-48), the treaties of Ryswick and Utrecht (1697/1714), Vienna (1814-15), Paris (1919) and San Francisco (the UN Charter, 1945).
[edit] The League of Nations
Following World War I, as after the Thirty Years' War, there was an outcry for rules of warfare to protect civilian populations, as well as a desire to curb invasions. The League of Nations, established after the war, attempted to curb invasions by enacting a treaty agreement providing for economic and military sanctions against member states that used "external aggression" to invade or conquer other member states. An international court was established, the Permanent Court of International Justice, to arbitrate disputes between nations without resorting to war. Meanwhile, many nations signed treaties agreeing to use international arbitration rather than warfare to settle differences. International crises, however, demonstrated that nations were not yet committed to the idea of giving external authorities a say in how nations conducted their affairs. Aggression on the part of Germany, Italy and Japan went unchecked by international law, and it took a Second World War to end it. yo yo y o
[edit] The postwar era
After World War II, as after the First World War and the Thirty Years' War, there was a strong desire to never again endure the horrors of war endured by the civilian populations. The League of Nations was re-attempted through another treaty organization, the United Nations.
The postwar era has been a highly successful one for international law. International cooperation has become far more commonplace, though of course not universal. Importantly, nearly two hundred nations are now members of the United Nations, and have voluntarily bound themselves to its charter. Even the most powerful nations have recognized the need for international cooperation and supports, and have routinely sought international agreement and consent before engaging in acts of war.
International law is, of course, only partly about the conduct of war. Most rules are civil, concerning the delivery of mail, trade, shipping, air travel, and the like. Most rules are obeyed routinely by most countries, because the rules make life easier for all concerned. The rules are rarely disputed. But some international law is extremely political and hotly debated. This includes not just the laws of warfare but also such matters as fishing rights.
[edit] Modern customary international law
An important development in modern international law is the concept of "consent." Before World War II, a nation would not have been considered to be bound by a rule unless it had formally agreed to be bound by it, or it was already customarily abiding by that rule. Now, however, merely consenting to an international practice is sufficient to be bound by it, without signing a treaty.
An evolution of the positivist approach of Grotius, the concept of consent is an element of customary international law. Customary international law is essentially what states actually do, plus the opinio juris of what states believe international law requires them to do.
Customary international law applies to every country, regardless of whether they have formally agreed to it. At the same time, all countries take part in forming customary international law by their practices and decisions. As new rules arise, countries accept, reject or modify them. When most countries are following a rule, everyone else will be held to it. Therefore, doing nothing is the same as consenting. Nations that did not take action may find themselves bound by an international law that is not to their advantage.
Customary international law can be overruled, however, by a treaty. For this reason, much customary international law has been agreed to formally by treaties between nations.
[edit] Modern treaty law
Treaties are essentially contracts between countries. They are agreements by which the parties intend to be bound. If treaties are broken, their effectiveness is weakened because there is no guarantee that future promises will be kept. So there is a strong incentive for nations to take treaties very seriously.
Modern nations engage in a two-step procedure for entering into treaties. The first step is signing the treaty. Being a signatory to a treaty means that a country intends to enter into the agreement. The second step is ratifying the treaty. A country that has ratified a treaty has gone beyond merely intending to enter into the agreement, and is now bound by it. This is a critical distinction, and sometimes a point of confusion. A nation may be a signatory to a treaty for many years without ever having ratified it.
Each country ratifies treaties its own way. The United States requires the two-thirds support of the Senate, the upper body of its legislature, for a treaty to be ratified; both the executive and the legislature must agree. In Canada, on the other hand, ratification is strictly an executive action, and no parliamentary approval is required before the nation is bound.
Modern treaties are interpreted according to the 1969 Vienna Convention on the Law of Treaties. This convention is so widely accepted that even nations that are not parties to the convention follow it. The convention's most important and sensible rule is that a treaty should be interpreted according to the plain meaning of its language, in the context of its purpose, and in good faith. This prevents much squabbling and unnecessary nit-picking. It also makes treaty authors spell out what they are trying to accomplish, to make interpretation easier, in a non-binding "preamble."
In the modern world, international law is more important than ever. Even the most powerful countries rely on it, and seek to comply with it -- and suffer consequences if they ignore it.
[edit] See also
- Consulate of the Sea internationall law, (13th century), written in Catalonia
- Important authors
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- Universities and institutes
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[edit] Notes
[edit] References
- W.G. Grewe, Epochen der Völkerrechtsgeschichte, translated as The Epochs of International Law
- M. Koskenniemi, The Gentle Civilizer of Nations
- A. Nussbaum, A Concise History of the Law of Nations
- H. Legohérel, Histoire du Droit International Public
- A. Truyol y Serra, Histoire du Droit International
- Journal of the History of International Law, since 1999
[edit] External links
- A Brief Primer on International Law With cases and commentary. Nathaniel Burney, 2007.
- Official United Nations website
- Official UN website on International Law
- Official website of the International Court of Justice
