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International Relations-PSC 201
VU
LESSON 25
THE RELEVANCE OF INTERNATIONAL LAW IN INTERNATIONAL
RELATIONS
What is International Law?
International laws are rules which relate to the functioning of individuals, institutions and states in the
international arena. International law has various ingredients including general principles of law and justice,
which are equally suited to regulating the conduct of individuals, organizations within a state and states
themselves.
Evolution of International Law
Formulation of international law can be traced back to the third and fourth millenniums B.C. Early rulers
had made international rules to safeguard emissaries, initiation and cessation of hostilities and arrangement
of truces, and maritime laws.
To aid governance, the Romans devised principles of just gentrium or law of the people. By the time the
Roman Empire fell, application of these laws was widely accepted.
European states also contributed to international laws at a later stage in history. By the 14th century, scholars
were writing about international law. Hugo Grotius, for example, produced a momentous work on laws
concerning war and peace, emphasizing the independent nature of law.
During the eighteenth century, three prominent schools of thought concerning international law were
evident; the positivists, the naturalists and the Grotians.
The naturalists believed in upholding morality through laws. The positivists focused on practicalities and the
consensual nature of these laws. The Grotians combined both naturalists and positivist elements.
In the past century, the League and the UN system, and subsequently the International Court of Justice
have made important contributions to international law. Other institutions like IMF or WTO influence laws
concerning trade economic laws.
Different Types of International Law
Private and Public Laws: private law concerns individuals, whereas public law concerns the behavior of
organizations and even states.
Procedural and Substantive Laws: Procedural laws define types of permitted behavior whereas substantive laws
concern territorial rights of states.
Laws of War and Peace: There are laws governing behavior of states in a state of war (concerning rights of
prisoners of war) and those meant to prevent outbreak of violence and promote peace.
Particular and General Laws: General or universal laws are applicable to all sovereign states, whereas particular
laws are defined by bilateral or regional agreements.
Relevant Vocabulary
Maritime: concerning the sea and its navigation
Bilateral: between two parties
Momentous: major or significant
Consensual: seeking agreement
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International Relations-PSC 201
VU
Suggested Readings
Students are advised to read the following chapters to develop a better understanding of the various
principals highlighted in this hand-out:
Chapter 11 in `"A Study of International Relations" by Dr. Sultan Khan
Internet Resources
In addition to reading from the textbook, please visit the following web-pages for this lecture, which
provide useful and interesting information:
Foreign and International Law
www.washlaw.edu/forint/forintmain.html