UN Charter Article 103

Introduction

Article 103 of the Charter of the United Nations establishes the priority of obligations under the UN Charter over obligations arising from other international agreements.

It provides an important rule for resolving situations where a State has obligations under the UN Charter and also has obligations under another international agreement, but the two obligations are incompatible.

The basic principle is:

Where a conflict exists, obligations under the UN Charter prevail over obligations under any other international agreement.

Article 103 is therefore closely connected with the supremacy and constitutional character of the UN Charter within the international legal system.

Text of Article 103

Article 103 provides:

“In the event of a conflict between the obligations of the Members of the United Nations under the present Charter and their obligations under any other international agreement, their obligations under the present Charter shall prevail.”

The provision applies specifically to Members of the United Nations.

Purpose of Article 103

The principal purpose of Article 103 is to prevent a State from relying on another treaty or international agreement to avoid an obligation it owes under the UN Charter.

The basic structure is:

UN Charter obligation

Other international agreement

↓

Conflict

↓

Article 103

↓

UN Charter obligation prevails

Essential Elements

Article 103 contains several important elements.

Conflict Between Obligations

Article 103 applies when there is a genuine conflict between obligations.

It is not enough that two treaties concern the same subject.

There must be an incompatibility between the obligations such that compliance with one would prevent compliance with the other.

UN Charter Obligation

One of the conflicting obligations must arise from the UN Charter.

The provision therefore gives priority specifically to Charter obligations.

Other International Agreement

The competing obligation may arise from another international agreement.

This may include:

• bilateral treaties;
• multilateral treaties;
• other international agreements.

Priority to the Charter

Where the conflict exists, the Charter obligation prevails.

This is the central rule of Article 103.

Article 103 Flowchart

State has two international obligations

↓

Obligation under UN Charter

Obligation under another international agreement

↓

Are they genuinely incompatible?

↙︎　　　　　　　　　↘︎

No conflict　　　 Conflict

↓

Both obligations　　 Article 103 applies

may continue　　　　 ↓

　　　　　　　　 Charter obligation prevails

Article 103 and Security Council Decisions

Article 103 becomes particularly important in relation to Security Council decisions, especially decisions adopted under the collective-security framework of Chapter VII.

Under Article 25, UN Members agree to accept and carry out the decisions of the Security Council in accordance with the Charter.

Therefore, a potential conflict may arise between:

Security Council obligation

and

Obligation under another treaty

Article 103 may give priority to the Charter obligation.

However, it is important not to state that Article 103 automatically makes every Security Council resolution superior to every other international legal obligation. The relevant question is whether the State has a Charter obligation that actually conflicts with the other obligation.

Article 103 and Article 25

These provisions should be read together.

Article 25

Members agree to accept and carry out Security Council decisions in accordance with the Charter.

Article 103

If a Charter obligation conflicts with an obligation under another international agreement, the Charter obligation prevails.

Combined Principle

Article 25

↓

Security Council decisions under the Charter

↓

Article 103

↓

Priority where a conflicting treaty obligation exists

Article 103 and Chapter VII

Chapter VII gives the Security Council powers concerning:

• threats to international peace;
• breaches of peace;
• acts of aggression.

Security Council decisions adopted under the Charter may require Member States to take particular measures.

If a State’s obligations under another treaty are incompatible with its Charter obligations arising from such measures, Article 103 becomes relevant.

Article 103 Does Not Create Unlimited Security Council Power

Article 103 should not be interpreted as giving the Security Council unlimited authority.

The Security Council remains an organ of the United Nations and must act within the framework of the UN Charter.

The question of whether a Security Council resolution is legally valid, and how far its obligations extend, can therefore be distinct from the question of priority under Article 103.

This distinction is important:

Validity of UN action

≠

Priority of Charter obligation

Article 103 and Human Rights Treaties

Article 103 can create difficult questions where a State has:

• obligations under the UN Charter;
• obligations under a human rights treaty.

The issue becomes particularly significant when Security Council sanctions affect individuals or entities.

A State may argue that another treaty protects certain rights, while the UN framework imposes a conflicting obligation.

The legal relationship between these obligations has been considered by international and regional courts.

Lockerbie Cases

Questions of Interpretation and Application of the 1971 Montreal Convention arising from the Aerial Incident at Lockerbie

The Lockerbie proceedings before the ICJ involved Libya, the United Kingdom and the United States.

The dispute raised important questions concerning the relationship between:

• the Montreal Convention;
• UN Security Council resolutions;
• obligations under the UN Charter.

Article 103 was central to the legal arguments concerning the priority of Charter obligations.

The case is therefore important when studying the relationship between the UN Charter and other treaties.

Kadi Cases

Kadi and Al Barakaat

The Kadi litigation before the European courts concerned individuals affected by sanctions connected with the UN Security Council’s counter-terrorism sanctions regime.

The European Court of Justice recognised the importance of the UN Charter framework but also examined the implementation of UN-related obligations within the EU legal order, particularly in relation to fundamental rights.

The case demonstrates the complex relationship between:

• Security Council sanctions;
• Article 103;
• international obligations;
• regional legal orders;
• fundamental rights.

Al-Dulimi Case

The Al-Dulimi litigation before the European Court of Human Rights also concerned implementation of UN Security Council sanctions and the relationship between:

• Article 103;
• Security Council obligations;
• human rights obligations.

It is useful for understanding that conflicts between UN obligations and other international obligations can raise complex questions concerning judicial review and implementation.

Article 103 and Pacta Sunt Servanda

Article 103 is closely connected with the general principle of pacta sunt servanda, but the two provisions perform different functions.

Pacta Sunt Servanda

Treaties in force must be performed in good faith.

Article 103

Where a Charter obligation conflicts with an obligation under another international agreement:

Charter obligation prevails.

Thus, Article 103 establishes a specific priority rule within the UN Charter system.

Article 103 and Vienna Convention on the Law of Treaties

Article 103 should also be distinguished from the rules of the Vienna Convention on the Law of Treaties (VCLT) concerning successive treaties.

The VCLT contains rules dealing with conflicts between treaties, particularly Article 30.

However, Article 103 establishes a special priority for UN Charter obligations.

Therefore:

General treaty conflict rules

Special Charter priority rule

↓

Article 103 applies where its conditions are satisfied

Article 30 VCLT and Article 103

A simplified distinction:

Article 103 UN Charter	Article 30 VCLT
Priority of UN Charter obligations	Application of successive treaties
Applies to conflict involving Charter obligation	Deals with treaties relating to same subject matter
Charter obligation prevails	Priority depends on circumstances under VCLT
Special rule	General treaty-law framework

Article 103 and Jus Cogens

Article 103 is not itself the same thing as jus cogens.

Article 103

Creates priority for UN Charter obligations in a conflict with obligations under another international agreement.

Jus Cogens

Concerns the hierarchical status of a peremptory norm of general international law.

Therefore:

Article 103 → Charter priority

Jus cogens → Peremptory norm

The two concepts can interact, but they should not be treated as identical.

Article 103 and Customary International Law

Article 103 expressly refers to obligations under:

“any other international agreement”

Therefore, its wording is specifically concerned with treaty or agreement obligations.

It should not simply be described as saying that the UN Charter always overrides all rules of customary international law.

The precise relationship between Charter obligations and customary international law can depend on the nature and status of the relevant rule.

Article 103 and Non-UN States

Article 103 refers to:

“obligations of the Members of the United Nations”

Therefore, the provision directly addresses UN Member States.

It does not itself create a general treaty hierarchy applicable to every State in the international system regardless of membership.

Article 103 and State Responsibility

If a State fails to comply with a Charter obligation because it follows a conflicting obligation under another international agreement, Article 103 may determine which obligation has priority.

A State cannot normally rely on its other treaty obligation as a justification for failing to perform a prevailing Charter obligation.

This may have consequences under the law of State responsibility.

Article 103 and Domestic Law

A State cannot normally invoke its domestic law to avoid its international obligations.

Similarly, Article 103 operates at the level of international obligations.

The question is not which obligation has priority under domestic law, but which international obligation prevails under the applicable international legal framework.

Article 103 and International Organisations

Article 103 primarily addresses obligations of UN Members.

However, its practical consequences can extend into situations involving:

• regional organisations;
• international organisations;
• implementation of Security Council measures.

This becomes particularly important where Member States implement UN obligations through another international organisation.

Importance of Article 103

Article 103 serves several important purposes.

Protects the Authority of the UN Charter

It ensures that States cannot undermine Charter obligations through inconsistent treaty commitments.

Supports Collective Security

It strengthens the effectiveness of Security Council action within the Charter framework.

Establishes a Conflict Rule

It provides a clear rule where Charter obligations and other treaty obligations are incompatible.

Promotes Institutional Coherence

It helps prevent contradictory international commitments from disabling the UN system.

Limitations of Article 103

Article 103 is powerful but not unlimited.

Actual Conflict Required

There must be a genuine conflict between obligations.

Charter Obligation Required

The priority rule applies to an obligation under the UN Charter.

Does Not Automatically Validate UN Decisions

Article 103 does not by itself make every act or decision of a UN organ lawful.

Does Not Mean Every UN Resolution Automatically Overrides Every Treaty

The actual legal obligation and its scope must be determined.

Must Be Read with the Charter

Article 103 cannot be separated from the broader constitutional structure of the UN Charter.

Important Cases

Lockerbie Cases

Importance: Relationship between Security Council measures, Charter obligations and treaty obligations.

Kadi and Al Barakaat

Importance: UN sanctions, Article 103, fundamental rights and regional legal orders.

Al-Dulimi

Importance: Relationship between Security Council obligations and human-rights protection.

Bosphorus

Relevant to the broader question of implementation of international obligations and human-rights review within regional legal systems.

Article 103 vs Article 2(4)

These provisions deal with completely different questions.

Article 2(4)

Prohibits the threat or use of force contrary to the Charter.

Article 103

Determines priority where a Charter obligation conflicts with another international agreement.

Therefore:

Article 2(4) → Prohibition

Article 103 → Priority

Article 103 vs Article 94

Article 94

Concerns compliance with ICJ decisions.

Article 103

Concerns priority between Charter obligations and obligations under other international agreements.

They should not be confused.

Article 103 vs Article 25

Article 25

Members agree to accept and carry out Security Council decisions in accordance with the Charter.

Article 103

Charter obligations prevail over conflicting obligations under other international agreements.

Together, they are particularly relevant to the legal effect of Security Council measures.

Practical Example

Suppose:

State A

has:

• an obligation under the UN Charter to implement a Security Council measure; and
• a conflicting obligation under another treaty.

If the two obligations cannot both be performed, then:

UN Charter obligation

↓

Article 103

↓

Prevails over conflicting treaty obligation

The State cannot simply rely on the other treaty to disregard its Charter obligation.

Complete Flowchart

Two International Obligations

↓

One arises under UN Charter

One arises under another international agreement

↓

Is there a genuine conflict?

↙︎　　　　　　　　　↘︎

No　　　　　　　 Yes

↓

Apply both　　　　 Article 103

　　　　　　　　　↓

　　　　　 Charter obligation prevails

Quick Revision

• Article 103 of the UN Charter establishes the priority of Charter obligations.
• It applies where there is a conflict between obligations under the UN Charter and another international agreement.
• The Charter obligation prevails.
• It applies to obligations of UN Member States.
• A genuine conflict between obligations is required.
• Article 103 is particularly important in relation to Security Council decisions.
• Article 25 should be read together with Article 103.
• Article 25 concerns Members accepting and carrying out Security Council decisions in accordance with the Charter.
• Article 103 does not automatically make every Security Council resolution lawful or unlimited.
• Article 103 is a priority rule, not itself a rule of jus cogens.
• Article 103 should be distinguished from pacta sunt servanda.
• Article 103 should also be distinguished from Article 30 VCLT, which deals with successive treaties.
• Article 103 does not simply mean that the Charter automatically overrides every rule of customary international law.
• The Lockerbie proceedings are important for the relationship between Charter obligations and other treaties.
• Kadi and Al-Dulimi illustrate difficulties involving UN sanctions and human-rights obligations.
• Article 103 supports the effectiveness of the UN collective-security system.
• Article 103 → Charter priority.

Key Exam Points

Article 103 → Priority of UN Charter obligations

Conflict + Charter obligation + Other international agreement

↓

Charter obligation prevails

Article 25 → Security Council decisions

Chapter VII → Collective security

Article 103 ≠ Jus Cogens

Article 103 ≠ Pacta Sunt Servanda

Article 103 ≠ Article 94

Article 103 ≠ Article 2(4)

Lockerbie → Charter obligations vs treaty obligations

Kadi → UN sanctions + fundamental rights

Al-Dulimi → UN sanctions + human-rights review

One-Line Memory Trick

“Article 103 = Charter Comes First.”

Or simply:

Conflict with another treaty → Check Article 103 → Charter obligation prevails.

Conclusion

Article 103 of the UN Charter is a fundamental conflict-of-obligations provision within the United Nations legal system. It ensures that a UN Member cannot rely on an inconsistent obligation under another international agreement to avoid an obligation imposed by the UN Charter.

Its importance is particularly evident in the context of Security Council measures under Chapter VII, where States may simultaneously be parties to numerous other international treaties.

However, Article 103 should be applied carefully. It requires a genuine conflict involving a Charter obligation, and it does not itself grant unlimited powers to UN organs or automatically make every Security Council measure lawful. The validity, interpretation and scope of the underlying Charter obligation remain separate questions.

For examinations, the central proposition is:

Where obligations under the UN Charter conflict with obligations under another international agreement, the UN Charter obligations prevail.

The most important connections are:

Article 25 → Security Council decisions

Article 103 → Priority of Charter obligations

Chapter VII → Collective security

Article 2(4) → Prohibition of force

Article 51 → Self-defence

Article 94 → ICJ judgments