Reparation in International Law

Meaning of Reparation

Reparation is one of the principal consequences of an internationally wrongful act under the law of State responsibility.

When a State breaches an international obligation and causes injury to another State or other legally protected interests, the responsible State is required to make full reparation for the injury caused.

The central provision is Article 31 of the International Law Commission’s Articles on Responsibility of States for Internationally Wrongful Acts (ARSIWA).

The basic principle is:

Internationally wrongful act

↓

Injury caused

↓

State responsibility

↓

Full reparation

Reparation is primarily remedial, not punitive. Its purpose is to repair the consequences of the wrongful act as far as possible.

Article 31 – Reparation for Injury

Article 31 ARSIWA establishes the general obligation of reparation.

It provides that the responsible State is under an obligation to make full reparation for the injury caused by the internationally wrongful act.

The injury includes:

• material injury, and
• moral injury.

Therefore:

Full reparation = Repair of material + moral injury, where established

Principle of Full Reparation

The most important principle of reparation is that the responsible State must provide full reparation for the injury caused.

The objective is not merely to compensate the injured State with an arbitrary amount of money.

The objective is to wipe out, as far as possible, the consequences of the wrongful act.

This principle was famously established in the Factory at Chorzów case.

Factory at Chorzów

In Factory at Chorzów (Germany v Poland), the Permanent Court of International Justice established the foundational principle of full reparation.

The Court held, in substance, that reparation should, as far as possible, eliminate the consequences of the illegal act and restore the situation that would probably have existed if the wrongful act had not occurred.

The case remains the classic authority for the law of reparation.

Exam Importance

Remember:

Factory at Chorzów → Principle of full reparation

It is particularly important when discussing:

• restitution;
• compensation;
• restoration;
• consequences of an internationally wrongful act.

Article 32 – Internal Law Cannot Avoid Reparation

Under Article 32 ARSIWA, the responsible State cannot rely upon its internal law as justification for failing to comply with its obligations under the law of State responsibility.

Therefore, a State cannot argue:

“Our domestic law prevents us from providing the required reparation.”

International responsibility is governed by international law.

Forms of Reparation

ARSIWA recognises three principal forms of reparation:

• Restitution — Article 35
• Compensation — Article 36
• Satisfaction — Article 37

These forms may operate separately or together depending upon the circumstances.

The objective remains:

Full reparation

Restitution

Meaning

Restitution means restoring the situation that existed before the internationally wrongful act occurred.

It is concerned with restoration rather than monetary payment.

Article 35 ARSIWA

Article 35 requires the responsible State to make restitution, that is, to re-establish the situation that existed before the wrongful act, provided that:

• restitution is not materially impossible; and
• restitution does not involve a burden wholly disproportionate to the benefit derived from restitution instead of compensation.

Example

If State A unlawfully takes possession of property belonging to State B, returning the property may constitute restitution.

Nature of Restitution

Restitution is generally the most direct way of restoring the position existing before the wrongful act.

However, it is not absolute.

Where physical or legal restoration is impossible, other forms of reparation may be required.

Compensation

Meaning

Compensation involves monetary payment for damage caused by the internationally wrongful act.

It becomes particularly important where restitution:

• is impossible;
• is insufficient; or
• does not fully repair the injury.

Article 36 ARSIWA

Article 36 provides for compensation for damage caused by the internationally wrongful act insofar as such damage is not made good by restitution.

The damage must be financially assessable.

Types of Damage

Depending on the circumstances, compensation may address:

• destruction of property;
• financial loss;
• economic loss;
• other financially assessable damage caused by the wrongful act.

Example

If State A unlawfully destroys infrastructure belonging to State B and restoration is not possible, State A may be required to provide monetary compensation for the legally established loss.

Satisfaction

Meaning

Satisfaction is a form of reparation primarily associated with moral or non-material injury.

It is governed by Article 37 ARSIWA.

Satisfaction may be appropriate where the injury cannot be adequately repaired through restitution or compensation.

Forms of Satisfaction

Depending upon the circumstances, satisfaction may take the form of:

• acknowledgement of the breach;
• expression of regret;
• formal apology;
• another appropriate modality.

Limitation

Satisfaction must not be:

• out of proportion to the injury, or
• humiliating to the responsible State.

Therefore, satisfaction is not intended to become a form of international punishment or humiliation.

Restitution vs Compensation vs Satisfaction

Form	Article	Purpose	Typical focus
Restitution	Article 35	Restore the previous situation	Property, territory, legal position
Compensation	Article 36	Financially repair damage	Economic/material loss
Satisfaction	Article 37	Address non-material injury	Apology, acknowledgement, regret

Easy Memory

Restitution → Restore

Compensation → Pay

Satisfaction → Acknowledge

Reparation for Material Injury

Material injury concerns tangible or financially assessable harm.

Examples may include:

• destruction of property;
• loss of infrastructure;
• financial losses;
• damage caused to natural resources where legally established.

Depending upon the circumstances, material injury may be repaired through:

Restitution + Compensation

or another appropriate combination.

Reparation for Moral Injury

Moral injury involves non-material harm.

It may concern injury to:

• dignity;
• reputation;
• sovereign rights;
• legal interests;
• other non-material interests.

Satisfaction may be appropriate in such circumstances.

However, moral injury does not necessarily mean that compensation is impossible. Monetary compensation may, where appropriate, form part of reparation for non-material injury.

Reparation and Causation

A responsible State is required to repair injury caused by the internationally wrongful act.

Therefore, there must be a legally relevant connection between:

Wrongful conduct

and

Injury claimed

Not every loss suffered after a wrongful act will automatically be recoverable.

The injury must be sufficiently connected to the wrongful conduct under the applicable rules of international law.

Reparation and Cessation

Cessation and reparation are different consequences of State responsibility.

Cessation

Stops a continuing wrongful act.

Reparation

Repairs the injury already caused by the wrongful act.

Example

If State A is unlawfully occupying State B’s territory:

Cessation → End the unlawful occupation

Restitution → Restore the lawful situation

Compensation → Repair established financial losses

Satisfaction → Address appropriate non-material injury

A single wrongful act can therefore give rise to multiple consequences.

Reparation and Non-Repetition

Under Article 30 ARSIWA, the responsible State may be required to provide appropriate assurances and guarantees of non-repetition where circumstances require.

These are different from reparation in the strict sense.

Their purpose is to reduce the risk that the wrongful conduct will occur again.

Therefore:

Cessation → Stop

Non-repetition → Prevent recurrence

Reparation → Repair injury

Reparation Is Not Punishment

One of the most important principles is that State responsibility is generally not criminal punishment.

Reparation is intended to:

• restore;
• compensate;
• remedy;
• acknowledge injury.

It is not designed simply to inflict a penalty on the responsible State.

This distinction is particularly important when differentiating compensation from punitive damages.

Forms of Reparation May Be Combined

Full reparation may require more than one form.

For example:

A wrongful act destroys property and also causes non-material injury.

The appropriate response might involve:

Restitution where restoration is possible

Compensation for financially assessable damage not otherwise repaired

Satisfaction for appropriate moral injury

The choice depends upon the circumstances of the case.

Limits on Restitution

Restitution is not required in every case.

Under Article 35, it may be excluded where:

• restitution is materially impossible; or
• restitution would involve a burden wholly disproportionate to the benefit obtained by choosing restitution rather than compensation.

Therefore:

Restitution is important, but not absolute.

Limits on Satisfaction

Satisfaction is also subject to limitations.

Under Article 37, satisfaction must not be:

• disproportionate to the injury; or
• humiliating to the responsible State.

This prevents satisfaction from becoming a disguised form of punishment.

Reparation and Jus Cogens

Serious breaches of obligations arising under peremptory norms of general international law (jus cogens) may involve consequences beyond ordinary bilateral reparation.

Under Articles 40 and 41 ARSIWA, States have additional obligations concerning serious breaches of jus cogens, including:

• cooperation to bring the breach to an end through lawful means;
• not recognising as lawful a situation created by the serious breach;
• not rendering aid or assistance in maintaining that situation.

Thus, reparation must be understood alongside the special regime applicable to serious breaches of peremptory norms.

Reparation and Countermeasures

Countermeasures are different from reparation.

Reparation

A duty of the responsible State to repair the injury caused.

Countermeasures

A temporary measure that may be taken by an entitled State to induce compliance with obligations concerning cessation and reparation, subject to strict conditions.

Therefore:

Reparation = obligation of responsible State

Countermeasure = possible response by another State

Important Cases

Factory at Chorzów

Leading principle: Full reparation.

The responsible State must, as far as possible, eliminate the consequences of the wrongful act and restore the position that would probably have existed without the wrongful act.

Exam relevance: Most important case for the basic principle of reparation.

Gabčíkovo-Nagymaros Project

The ICJ examined the consequences of wrongful conduct in the context of a treaty dispute, including the restoration of legal compliance between the parties.

Exam relevance: Useful for understanding the relationship between wrongful conduct, cessation and remedial consequences.

United States Diplomatic and Consular Staff in Tehran

The case involved serious violations of obligations concerning diplomatic and consular personnel and premises.

It demonstrates the consequences flowing from an internationally wrongful act and the obligation to remedy the resulting injury.

Armed Activities on the Territory of the Congo

The ICJ considered State responsibility and reparation arising from internationally wrongful conduct.

The case is important for understanding how the Court approaches reparation for injury resulting from violations of international law.

Simple Flowchart

Internationally wrongful act

↓

Injury caused

↓

State responsibility

↓

Article 31 → Full reparation

↓

Can the original situation be restored?

Yes → Restitution (Article 35)

No / insufficient → Compensation (Article 36)

↓

Is there moral or non-material injury requiring additional remedy?

↓

Satisfaction (Article 37)

↓

Full reparation

Complete Reparation Framework

Article 31 → General obligation of full reparation

↓

Article 35 → Restitution

↓

Article 36 → Compensation

↓

Article 37 → Satisfaction

These provisions should be understood together.

The State is not entitled simply to choose the cheapest form of remedy. The objective is full reparation for the injury caused.

Quick Revision

Provision	Principle
Article 28	Legal consequences of State responsibility
Article 29	Continued duty to perform original obligation
Article 30	Cessation and non-repetition
Article 31	Full reparation
Article 32	Internal law cannot justify non-compliance
Article 33	Scope of obligations
Article 35	Restitution
Article 36	Compensation
Article 37	Satisfaction
Articles 40–41	Serious breaches of jus cogens
Leading case	Factory at Chorzów

Key Exam Points

• Article 31 ARSIWA establishes the principle of full reparation.
• Reparation is a consequence of an internationally wrongful act.
• Reparation covers injury caused by the wrongful act, including material and moral injury.
• The classic authority is Factory at Chorzów.
• Article 35 → Restitution
• Article 36 → Compensation
• Article 37 → Satisfaction
• Restitution seeks to restore the pre-breach situation.
• Compensation addresses financially assessable damage not repaired through restitution.
• Satisfaction addresses appropriate moral or non-material injury.
• The forms of reparation can be combined where necessary for full reparation.
• Reparation is remedial, not primarily punitive.
• Cessation and non-repetition are distinct from reparation.
• Internal law cannot be used to escape international responsibility under Article 32.
• Serious breaches of jus cogens have additional consequences under Articles 40–41.

Conclusion

Reparation is the central remedial consequence of an internationally wrongful act. The fundamental rule under Article 31 ARSIWA is that the responsible State must make full reparation for the injury caused.

The three principal forms are:

Restitution → restore the previous situation

Compensation → repair financially assessable damage

Satisfaction → address appropriate moral or non-material injury

These remedies are not necessarily alternatives. Where required, they may operate together to achieve the overarching objective of full reparation.

The most important authority is Factory at Chorzów, which established the foundational principle that reparation should, as far as possible, eliminate the consequences of the wrongful act.

For examinations, remember:

Article 31 → Full Reparation

Article 35 → Restitution

Article 36 → Compensation

Article 37 → Satisfaction

Factory at Chorzów → Leading authority on full reparation