International law (also known as public international law and the law of nations) is the set of rules, norms, and standards generally recognized as binding between states. It establishes normative guidelines and a common conceptual framework for states across a broad range of domains, including war,
diplomacy
Diplomacy comprises spoken or written communication by representatives of states (such as leaders and diplomats) intended to influence events in the international system.Ronald Peter Barston, ''Modern diplomacy'', Pearson Education, 2006, p. 1 ...
human rights
Human rights are moral principles or normsJames Nickel, with assistance from Thomas Pogge, M.B.E. Smith, and Leif Wenar, 13 December 2013, Stanford Encyclopedia of PhilosophyHuman Rights Retrieved 14 August 2014 for certain standards of hu ...
. Scholars distinguish between international legal institutions on the basis of their obligations (the extent to which states are bound to the rules), precision (the extent to which the rules are unambiguous), and delegation (the extent to which third parties have authority to interpret, apply and make rules).
The
sources of international law
International law, also known as "law of nations", refers to the body of rules which regulate the conduct of sovereign states in their relations with one another. Sources of international law include treaties, international customs, general wi ...
include international custom (general state practice accepted as law), treaties, and general principles of law recognized by most national legal systems. Although international law may also be reflected in
international comity
In law, comity is "a practice among different political entities (as countries, states, or courts of different jurisdictions)" involving the "mutual recognition of legislative, executive, and judicial acts."
Etymology
Comity derives from the Lati ...
—the practices adopted by states to maintain good relations and mutual recognition, such as saluting the flag of a foreign ship—such traditions are not legally binding.
International law differs from state-based
legal system
The contemporary national legal systems are generally based on one of four basic systems: civil law, common law, statutory law, religious law or combinations of these. However, the legal system of each country is shaped by its unique history an ...
s in that it is primarily—though not exclusively—applicable to states, rather than to individuals, and operates largely through consent, since there is no universally accepted authority to enforce it upon sovereign states. Consequently, states may choose to not abide by international law, and even to breach a treaty. However, such violations, particularly of customary international law and peremptory norms (''
jus cogens
Jus may refer to:
Law
* Jus (law), the Latin word for law or right
* Jus (canon law), a rule within the Roman Catholic Church
People
* Juš Kozak (1892–1964), Slovenian writer
* Juš Milčinski, Slovenian theatre improviser
* Justin Jus ...
''), can be met with disapproval by others and in some cases coercive action (ranging from diplomatic and
economic sanctions
Economic sanctions are commercial and financial penalties applied by one or more countries against a targeted self-governing state, group, or individual. Economic sanctions are not necessarily imposed because of economic circumstances—they ...
to war).
The relationship and interaction between a national legal system ( municipal law) and international law is complex and variable. National law may become international law when treaties permit national jurisdiction to supranational tribunals such as the
European Court of Human Rights
The European Court of Human Rights (ECHR or ECtHR), also known as the Strasbourg Court, is an international court of the Council of Europe which interprets the European Convention on Human Rights. The court hears applications alleging that a ...
or the
International Criminal Court
The International Criminal Court (ICC or ICCt) is an intergovernmental organization and international tribunal seated in The Hague, Netherlands. It is the first and only permanent international court with jurisdiction to prosecute individua ...
. Treaties such as the
Geneva Conventions
upright=1.15, Original document in single pages, 1864
The Geneva Conventions are four treaties, and three additional protocols, that establish international legal standards for humanitarian treatment in war. The singular term ''Geneva Conv ...
may require national law to conform to treaty provisions. National laws or constitutions may also provide for the implementation or integration of international legal obligations into domestic law.
Terminology
The term "international law" is sometimes divided into "public" and "private" international law, particularly by civil law scholars, who seek to follow a Roman tradition. Roman lawyers would have further distinguished '' jus gentium'', the law of nations, and '' jus inter gentes'', agreements between nations. On this view, "public" international law is said to cover relations between nation-states and includes fields such as treaty law, law of sea,
international criminal law
International criminal law (ICL) is a body of public international law designed to prohibit certain categories of conduct commonly viewed as serious atrocities and to make perpetrators of such conduct criminally accountable for their perpetrat ...
, the
laws of war
The law of war is the component of international law that regulates the conditions for initiating war ('' jus ad bellum'') and the conduct of warring parties (''jus in bello''). Laws of war define sovereignty and nationhood, states and territ ...
or
international humanitarian law
International humanitarian law (IHL), also referred to as the laws of armed conflict, is the law that regulates the conduct of war ('' jus in bello''). It is a branch of international law that seeks to limit the effects of armed conflict by pr ...
,
international human rights law
International human rights law (IHRL) is the body of international law designed to promote human rights on social, regional, and domestic levels. As a form of international law, international human rights law are primarily made up of treaties, a ...
, and refugee law. By contrast "private" international law, which is more commonly termed "
conflict of laws
Conflict of laws (also called private international law) is the set of rules or laws a jurisdiction applies to a case, transaction, or other occurrence that has connections to more than one jurisdiction. This body of law deals with three broad ...
", concerns whether courts within countries claim jurisdiction over cases with a foreign element, and which country's law applies.
When the modern system of (public) international law developed out of the tradition of the late medieval ''ius gentium,'' it was referred to as ''the law of nations,'' a direct translation of the concept ''ius gentium used'' by
Hugo Grotius
Hugo Grotius (; 10 April 1583 – 28 August 1645), also known as Huig de Groot () and Hugo de Groot (), was a Dutch humanist, diplomat, lawyer, theologian, jurist, poet and playwright.
A teenage intellectual prodigy, he was born in Delf ...
and ''droits des gens'' of
Emer de Vattel
Emer (Emmerich) de Vattel ( 25 April 171428 December 1767) was an international lawyer. He was born in Couvet in the Principality of Neuchâtel (now a canton part of Switzerland but part of Prussia at the time) in 1714 and died in 1767. He was l ...
. The modern term ''international law'' was invented by
Jeremy Bentham
Jeremy Bentham (; 15 February 1748 O.S. 4 February 1747">Old_Style_and_New_Style_dates.html" ;"title="nowiki/>Old Style and New Style dates">O.S. 4 February 1747ref name="Johnson2012" /> – 6 June 1832) was an English philosopher, jurist, an ...
in 1789 and established itself in the 19th century.
A more recent concept is " supranational law", which concerns regional agreements where the laws of nation states may be held inapplicable when conflicting with a supranational legal system to which the nation has a
treaty
A treaty is a formal, legally binding written agreement between actors in international law. It is usually made by and between sovereign states, but can include international organizations, individuals, business entities, and other legal perso ...
obligation. Systems of supranational law arise when nations explicitly cede their right to make certain judicial decisions to a common tribunal. The decisions of the common tribunal are directly effective in each party nation, and have priority over decisions taken by national courts. The
European Union
The European Union (EU) is a supranational political and economic union of member states that are located primarily in Europe. The union has a total area of and an estimated total population of about 447million. The EU has often been ...
is the most prominent example of an international treaty organization that implements a supranational legal framework, with the
European Court of Justice
The European Court of Justice (ECJ, french: Cour de Justice européenne), formally just the Court of Justice, is the supreme court of the European Union in matters of European Union law. As a part of the Court of Justice of the European Unio ...
having supremacy over all member-nation courts in matter of
European Union law
European Union law is a system of rules operating within the member states of the European Union (EU). Since the founding of the European Coal and Steel Community following World War II, the EU has developed the aim to "promote peace, its valu ...
.
The term "transnational law" is sometimes used to a body of rules of private law that transcend the nation state.
History
The origins of international law can be traced back to
antiquity
Antiquity or Antiquities may refer to:
Historical objects or periods Artifacts
*Antiquities, objects or artifacts surviving from ancient cultures
Eras
Any period before the European Middle Ages (5th to 15th centuries) but still within the histo ...
. Among the earliest examples are
peace treaties
A peace treaty is an agreement between two or more hostile parties, usually countries or governments, which formally ends a state of war between the parties. It is different from an armistice, which is an agreement to stop hostilities; a surre ...
between the
Mesopotamia
Mesopotamia ''Mesopotamíā''; ar, بِلَاد ٱلرَّافِدَيْن or ; syc, ܐܪܡ ܢܗܪ̈ܝܢ, or , ) is a historical region of Western Asia situated within the Tigris–Euphrates river system, in the northern part of the F ...
n city-states of
Lagash
Lagash (cuneiform: LAGAŠKI; Sumerian: ''Lagaš''), was an ancient city state located northwest of the junction of the Euphrates and Tigris rivers and east of Uruk, about east of the modern town of Ash Shatrah, Iraq. Lagash (modern Al-Hiba) ...
and
Umma
Umma ( sux, ; in modern Dhi Qar Province in Iraq, formerly also called Gishban) was an ancient city in Sumer. There is some scholarly debate about the Sumerian and Akkadian names for this site. Traditionally, Umma was identified with Tell ...
Ramses II
Ramesses II ( egy, wikt:rꜥ-ms-sw, rꜥ-ms-sw ''Rīʿa-məsī-sū'', , meaning "Ra is the one who bore him"; ), commonly known as Ramesses the Great, was the third pharaoh of the Nineteenth Dynasty of Egypt. Along with Thutmose III he is oft ...
Hattusilis III Ḫattušili (''Ḫattušiliš'' in the inflected nominative case) was the regnal name of three Hittite kings:
* Ḫattušili I (Labarna II)
* Ḫattušili II
* Ḫattušili III
It was also the name of two Neo-Hittite kings:
* Ḫattušili I (Laba ...
, concluded in 1258 BCE. Interstate pacts and agreements of various kinds were also negotiated and concluded by polities across the world, from the eastern
Mediterranean
The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on th ...
to
East Asia
East Asia is the eastern region of Asia, which is defined in both geographical and ethno-cultural terms. The modern states of East Asia include China, Japan, Mongolia, North Korea, South Korea, and Taiwan. China, North Korea, South Korea ...
.
Ancient Greece
Ancient Greece ( el, Ἑλλάς, Hellás) was a northeastern Mediterranean civilization, existing from the Greek Dark Ages of the 12th–9th centuries BC to the end of classical antiquity ( AD 600), that comprised a loose collection of cult ...
, which developed basic notions of governance and international relations, contributed to the formation of the international legal system; many of the earliest peace treaties on record were concluded among the Greek city-states or with neighboring states. The
Roman Empire
The Roman Empire ( la, Imperium Romanum ; grc-gre, Βασιλεία τῶν Ῥωμαίων, Basileía tôn Rhōmaíōn) was the post- Republican period of ancient Rome. As a polity, it included large territorial holdings around the Medite ...
established an early conceptual framework for international law, ''jus gentium'' ("law of nations"), which governed both the status of foreigners living in Rome and relations between foreigners and Roman citizens. Adopting the Greek concept of
natural law
Natural law ( la, ius naturale, ''lex naturalis'') is a system of law based on a close observation of human nature, and based on values intrinsic to human nature that can be deduced and applied independently of positive law (the express enacted ...
, the Romans conceived of ''jus gentium'' as being universal. However, in contrast to modern international law, the Roman law of nations applied to relations with and between foreign individuals rather than among political units such as states.
Beginning with the
Spring and Autumn period
The Spring and Autumn period was a period in Chinese history from approximately 770 to 476 BC (or according to some authorities until 403 BC) which corresponds roughly to the first half of the Eastern Zhou period. The period's name derives fr ...
of the eighth century BCE, China was divided into numerous states that were often at war with each other. Subsequently, there emerged rules for diplomacy and treaty-making, including notions regarding the just grounds for war, the rights of neutral parties, and the consolidation and partition of states; these concepts were sometimes applied to relations with "barbarians" along China's western periphery beyond the Central Plains. The subsequent
Warring States period
The Warring States period () was an era in ancient Chinese history characterized by warfare, as well as bureaucratic and military reforms and consolidation. It followed the Spring and Autumn period and concluded with the Qin wars of conquest ...
saw the development of two major schools of thought,
Confucianism
Confucianism, also known as Ruism or Ru classicism, is a system of thought and behavior originating in ancient China. Variously described as tradition, a philosophy, a religion, a humanistic or rationalistic religion, a way of governing, or ...
and Legalism, both of which held that the domestic and international legal spheres were closely interlinked, and sought to establish competing normative principles to guide foreign relations. Similarly, the
Indian subcontinent
The Indian subcontinent is a physiographical region in Southern Asia. It is situated on the Indian Plate, projecting southwards into the Indian Ocean from the Himalayas. Geopolitically, it includes the countries of Bangladesh, Bhutan, India ...
was characterized by an ever-changing panoply of states, which over time developed rules of neutrality, treaty law, and international conduct. Embassies both temporary and permanent were established between states to maintain diplomatic relations, and relations were conducted with distant states in Europe and East Asia.
Following the collapse of the western Roman Empire in the fifth century CE, Europe fragmented into numerous often-warring states for much of the next five centuries. Political power was dispersed across a range of entities, including the Church, mercantile city-states, and kingdoms, most of which had overlapping and ever-changing jurisdictions. As in China and India, these divisions prompted the development of rules aimed at providing stable and predictable relations. Early examples include
canon law
Canon law (from grc, κανών, , a 'straight measuring rod, ruler') is a set of ordinances and regulations made by ecclesiastical authority (church leadership) for the government of a Christian organization or church and its members. It is th ...
, which governed
ecclesiastical
{{Short pages monitor
Hans Morgenthau believed international law to be the weakest and most primitive system of law enforcement; he likened its decentralised nature to the law that prevails in preliterate tribal societies. Monopoly on violence is what makes domestic law enforceable; but between nations, there are multiple competing sources of force. The confusion created by treaty laws, which resemble private contracts between persons, is mitigated only by the relatively small number of states. For example, it is unclear whether the Nuremberg trials created new law, or applied the existing law of the Kellogg-Briand pact.
Morgenthau asserts that no state may be compelled to submit a dispute to an international tribunal, making laws unenforceable and voluntary. International law is also unpoliced, lacking agencies for enforcement. He cites a 1947 US opinion poll in which 75% of respondents wanted "an international police to maintain world peace", but only 13% wanted that force to exceed the US armed forces. Later surveys have produced similar contradictory results.Morgenthau pp 281, 289, 324.
See also
*
Natural law
Natural law ( la, ius naturale, ''lex naturalis'') is a system of law based on a close observation of human nature, and based on values intrinsic to human nature that can be deduced and applied independently of positive law (the express enacted ...
List of treaties
This list of treaties contains known agreements, pacts, peaces, and major contracts between states, armies, governments, and tribal groups.
Before 1200 CE
1200–1299
1300–1399
1400–1499
1500–1599
1600–1699
1700–1799
...
*
Consular law
A consul is an official representative of the government of one state in the territory of another, normally acting to assist and protect the citizens of the consul's own country, as well as to facilitate trade and friendship between the people ...
*
Arbitration
Arbitration is a form of alternative dispute resolution (ADR) that resolves disputes outside the judiciary courts. The dispute will be decided by one or more persons (the 'arbitrators', 'arbiters' or ' arbitral tribunal'), which renders the ...
*
Anarchy (international relations)
In international relations theory, anarchy is the idea that the world lacks any supreme authority or sovereign. In an anarchic state, there is no hierarchically superior, coercive power that can resolve disputes, enforce law, or order the system of ...
*
Aviation law
Aviation law is the branch of law that concerns flight, air travel, and associated legal and business concerns. Some of its area of concern overlaps that of admiralty law and, in many cases, aviation law is considered a matter of internationa ...
Conflict of laws
Conflict of laws (also called private international law) is the set of rules or laws a jurisdiction applies to a case, transaction, or other occurrence that has connections to more than one jurisdiction. This body of law deals with three broad ...
International community
The international community is an imprecise phrase used in geopolitics and international relations to refer to a broad group of people and governments of the world.
As a rhetorical term
Aside from its use as a general descriptor, the term is t ...
INTERPOL
The International Criminal Police Organization (ICPO; french: link=no, Organisation internationale de police criminelle), commonly known as Interpol ( , ), is an international organization that facilitates worldwide police cooperation and cr ...
UNIDROIT
UNIDROIT (formally, the International Institute for the Unification of Private Law; French: ''Institut international pour l'unification du droit privé'') is an intergovernmental organization whose objective is to harmonize international private ...
* I Brownlie, ''Principles of Public International Law'' (7th edn,
Oxford University Press
Oxford University Press (OUP) is the university press of the University of Oxford. It is the largest university press in the world, and its printing history dates back to the 1480s. Having been officially granted the legal right to print book ...
, 2008)
* Dominique Carreau, Droit international, Pedone, 10e édition, 2009 .
* P.-M. Dupuy & Y. Kerbrat, "Droit international public" (10th ed., Paris, Dalloz, 2010)
*
*
* Hafner-Burton, Emilie M.; Victor, David G.; Lupu, Yonatan (2012). "Political Science Research on International Law: The State of the Field". American Journal of International Law 106 (1):47–97.
* M. N. Shaw, ''International Law'' (5th ed
Cambridge University Press
Cambridge University Press is the university press of the University of Cambridge. Granted letters patent by Henry VIII of England, King Henry VIII in 1534, it is the oldest university press in the world. It is also the King's Printer.
Cambr ...
2003)
*
Rafael Domingo Osle
Rafael Domingo Oslé (Logrono, La Rioja, 1963) is a Spanish professor of law and legal historian.
Education
Rafael Domingo received his university law degree and a doctorate in law from the University of Navarra. He conducted legal research as a ...
, ''The New Global Law'' (Cambridge University Press 2010)
* Giuliana Ziccardi Capaldo, "The Pillars of Global Law" (Ashgate 2008)
* Hans Kelsen, ''Peace Through Law'' (1944)
* Koremenos, Barbara (2016). ''The Continent of International Law: Explaining Agreement Design''. Cambridge University Press.
* David L. Sloss, Michael D. Ramsey, William S. Dodge (2011) ''International Law in the U.S. Supreme Court'', 0521119561, ISBN 978-0-521-11956-6 Cambridge University Press
*
Rafael Domingo Osle
Rafael Domingo Oslé (Logrono, La Rioja, 1963) is a Spanish professor of law and legal historian.
Education
Rafael Domingo received his university law degree and a doctorate in law from the University of Navarra. He conducted legal research as a ...
Routledge
Routledge () is a British multinational publisher. It was founded in 1836 by George Routledge, and specialises in providing academic books, journals and online resources in the fields of the humanities, behavioural science, education, law, ...
United Nations
The United Nations (UN) is an intergovernmental organization whose stated purposes are to maintain international peace and security, develop friendly relations among nations, achieve international cooperation, and be a centre for harmonizi ...