International Law and Justice

UN Photo/Rick Bajornas
Lady Justice, Hamburg City Hall, Germany

Among the greatest achievements of the United Nations is the development of a body of international law—conventions, treaties and standards—central to promoting economic and social development, as well as to advancing international peace and security. Many of the treaties brought about by the United Nations form the basis of the law that governs relations among nations. While the work of the UN in this area does not always receive attention, it has a daily impact on the lives of people everywhere. 

The Charter of the United Nations specifically calls on the Organization to help in the settlement of international disputes by peaceful means, including arbitration and judicial settlement (Article 33), and to encourage the progressive development of international law and its codification (Article 13).

Over the years, more than 560 multilateral treaties have been deposited with the Secretary-General of the United Nations. Many other treaties are deposited with governments or other entities. The treaties cover a broad range of subject matters such as human rights, disarmament and protection of the environment.

General Assembly as a forum for adopting multilateral treaties

The General Assembly is composed of representatives from each Member State of the United Nations and is the main deliberative body on matters relating to international law. Many multilateral treaties are in fact adopted by the General Assembly and subsequently opened for signature and ratification. The Legal (Sixth) Committee assists the work of the General Assembly by providing advice on substantive legal matters. The Committee is also made up of representatives from all Member States of the United Nations.

The General Assembly has adopted a number of multilateral treaties throughout its history, including: 

In many areas, the legal work of the United Nations has been pioneering, addressing problems as they take on an international dimension. The UN has been at the forefront of efforts to provide a legal framework in such areas as protecting the environment, regulating migrant labour, curbing drug trafficking and combating terrorism. This work continues today, as international law assumes a more central role across a wider spectrum of issues, including human rights law and international humanitarian law. 
Read also about Law of the Sea.

Development and codification of international law

International Law Commission

The International Law Commission was established by the General Assembly in 1947 to promote the progressive development of international law and its codification. The Commission is composed of 34 members who  collectively represent the worlds principal legal systems, and serve as experts in their individual capacity, not as representatives of their governments. They address a wide range of issues relevant to the regulation of relations among states, and frequently consult with the International Committee of the Red Cross, the International Court of Justice and UN specialized agencies, depending on the subject being examined. Most of the Commission’s work involves the preparation of drafts on aspects of international law.

Some topics are chosen by the Commission, others are referred to it by the General Assembly. When the Commission completes work on a topic, the General Assembly sometimes convenes an international conference of plenipotentiaries to incorporate the draft into a convention. The convention is then opened to states to become parties—meaning that such countries formally agree to be bound by its provisions. Some of these conventions form the very foundation of the law governing relations among states. Examples include:

International humanitarian law

International humanitarian law encompasses the principles and rules that regulate the means and methods of warfare, as well as the humanitarian protection of civilian populations, sick and wounded combatants, and prisoners of war. Major instruments include the 1949 Geneva Conventions for the Protection of War Victims and two additional protocols concluded in 1977 under the auspices of the International Committee of the Red Cross.

The United Nations has taken a leading role in efforts to advance international humanitarian law. The Security Council has become increasingly involved in protecting civilians in armed conflict, promoting human rights and protecting children in wars. 

The Rule of Law

Promoting the rule of law at the national and international levels is at the heart of the United Nations’ mission.  Establishing respect for the rule of law is fundamental to achieving a durable peace in the aftermath of conflict, to the effective protection of human rights, and to sustained economic progress and development.  The principle that everyone – from the individual to the State itself – is accountable to laws that are publicly promulgated, equally enforced and independently adjudicated, is a fundamental concept which drives much of the United Nations work.  The main United Nations organs, including the General Assembly and the Security Council, play essential roles in supporting Member States to strengthen the rule of law, as do many United Nations entities.

Responsibility for the overall coordination of rule of law work by the United Nations system rests with the Rule of Law Coordination and Resource Group, chaired by the Deputy Secretary-General and supported by the Rule of Law Unit.  Members of the Group are the principals of 20 United Nations entities engaged in supporting Member States to strengthen the rule of law.  Providing support from headquarters to rule of law activities at the national level, the Secretary-General designated the Department of Peacekeeping Operations (DPKO) and the United Nations Development Programme (UNDP) as the joint global focal point for the police, justice and corrections areas in the rule of law in post-conflict and other crisis situations. 

Judicial settlement of disputes

International Court of Justice

The primary United Nations organ for the settlement of disputes is the International Court of Justice. Also known as the World Court, it was founded in 1946. Since its founding, the Court has considered over 160 cases, issued numerous judgments on disputes brought to it by states and issued advisory opinions in response to requests by UN organizations. Most cases have been dealt with by the full Court, but since 1981 six cases have been referred to special chambers at the request of the parties. 

In its judgments, the Court has addressed international disputes involving economic rights, rights of passage, the non-use of force, non-interference in the internal affairs of states, diplomatic relations, hostage-taking, the right of asylum and nationality. States bring such disputes before the Court in search of an impartial solution to their differences on the basis of law. By achieving peaceful settlement on such questions as land frontiers, maritime boundaries and territorial sovereignty, the Court has often helped to prevent the escalation of disputes.

International Criminal Justice

The international community has had long aspired to create a permanent international court to try the most serious international crimes, and, in the 20th century, it reached consensus on definitions of genocide, crimes against humanity and war crimes.

Tribunals

After the Second World War the Nuremberg and Tokyo trials addressed war crimes, crimes against peace, and crimes against humanity committed during the Second World War.

The ad hoc tribunals and United Nations-assisted tribunals have continued to contribute to combating impunity and promoting accountability for the most serious crimes.  In the 1990s, after the end of the Cold War, the International Criminal Tribunals for the former Yugoslavia (ICTY) and for Rwanda (ICTR) were established to try crimes committed within a specific time-frame and during a specific conflict. This applies, as well, to three courts established by the states concerned, but with substantial UN support: the Special Court for Sierra Leone (2002), the Extraordinary Chambers in the Courts of Cambodia (2006) and the Special Tribunal for Lebanon (2007). Sometimes referred to as ‘hybrid’ courts, they are non-permanent institutions which will cease to exist once all their cases have been heard.

The International Criminal Court

The idea of a permanent international court to prosecute crimes against humanity was first considered at the United Nations in the context of the adoption of the Genocide Convention of 1948. For many years, differences of opinions forestalled further developments. In 1992, the General Assembly directed the International Law Commission to prepare a draft statute for such a court. The massacres in Cambodia, the former Yugoslavia and Rwanda made the need for it even more urgent.

The International Criminal Court (ICC) has jurisdiction to prosecute individuals who commit genocide, war crimes and crimes against humanity. It will also have jurisdiction over the crime of aggression when agreement is reached on the definition of such a crime. The ICC is legally and functionally independent from the United Nations, and is not a part of the UN system.

The cooperation between the UN and the ICC is governed by a Negotiated Relationship Agreement. The Security Council can initiate proceedings before the ICC, and can refer to the ICC situations that would not otherwise fall under the Court’s jurisdiction. The Court has 18 judges, elected by the states parties for a term limited to nine years, except that a judge shall remain in office to complete any trial or appeal which has already begun. No two judges can be from the same country.

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