International Criminal Court: Jurisdiction, Structure, and the Rome Statute

The International Criminal Court (ICC) serves as a permanent international tribunal designed to ensure that the most serious crimes known to humankind do not go unpunished. Established by the Rome Statute, the Court operates under a specific legal framework that defines who it can prosecute, which crimes fall under its purview, and how it interacts with sovereign states.

Jurisdiction and Prosecutable Crimes

The ICC is designed to prosecute individuals rather than states or organizations. Its jurisdiction is limited to four specific categories of international crimes, as detailed in Articles 6, 7, 8, and 8 bis of the Rome Statute:

• Genocide: Acts committed with intent to destroy a national, ethnical, racial, or religious group.
• Crimes against humanity: Widespread or systematic attacks directed against any civilian population.
• War crimes: Grave breaches of the Geneva Conventions and other serious violations of the laws of war.
• Crime of aggression: The use of armed force by a state against the sovereignty, integrity, or independence of another state.

For the Court to exercise jurisdiction, the crimes must have been committed after July 1, 2002, the date the Rome Statute entered into force.

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Conditions for Exercising Jurisdiction

The Court can initiate proceedings in three specific scenarios:

1. The crimes occurred on the territory of a state party.
2. The crimes were committed by a national of a state party.
3. The crimes were referred to the Prosecutor by the UN Security Council.

Investigations may begin via a request from a state party or a referral from the UN Security Council. In other instances, the Prosecutor must seek authorization from a Pre-Trial Chamber consisting of three judges to begin an investigation proprio motu (on its own initiative).

The Debate Over Official Immunity

One of the most contentious aspects of the ICC is the irrelevance of official capacity. Under Article 27, no individual is exempt from criminal responsibility based on their position. This includes Heads of State, government members, or parliamentarians. The only immunity recognized by the ICC is for individuals who were under the age of 18 at the time the crime was committed.

However, a legal conflict arises when the Court issues warrants for leaders of states that are not parties to the Rome Statute, such as Russia or Israel. According to the Vienna Convention on the Law of Treaties, states that have not ratified a treaty are not bound by its provisions, meaning they have not waived the immunities of their officials.

Article 27 vs. Article 98

While Article 27 removes immunity for all, Article 98 suggests the Court cannot request surrender if it would force a state to act inconsistently with its international obligations regarding diplomatic immunity of a third state, unless that third state waives the immunity.

The Court has addressed this conflict through the Al-Bashir arrest warrant decisions, proposing two main arguments:

• The Security Council Route: If the UN Security Council refers a situation, the state in question is effectively placed in the position of a state party, thereby waiving immunity under Article 27.
• Grammatical Interpretation: As reaffirmed in a 2024 decision against Mongolia, the Court argues that Article 98(1) does not explicitly mention heads of state, implying it is not an exception to Article 27 for non-party heads of state.

Organizational Structure

The Rome Statute established three primary bodies to manage the Court's operations:

• The International Criminal Court: The judicial body itself.
• The Assembly of States Parties (ASP): The management oversight body, which includes a Permanent Secretariat (est. 2003) and an elected Bureau (President and Vice-President).
• The Trust Fund for Victims: Dedicated to providing reparations.

The ICC is further divided into four internal organs:

1. The Presidency: Handles primarily administrative duties.
2. The Divisions: Comprising the Pre-Trial, Trial, and Appeals judges.
3. The Office of the Prosecutor: Responsible for investigations and prosecutions.
4. The Registry: Provides essential support to the other three organs.

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Amending the Rome Statute

The Rome Statute can be updated to reflect evolving legal needs. Most amendments require a two-thirds majority of states parties for approval and must be ratified by seven-eighths of states parties to enter into force. If a state party does not ratify an amendment, it may withdraw from the statute within one year of the amendment taking effect.

Amendments specifically regarding the list of crimes follow a different rule: they only apply to the states parties that ratify them and do not require a seven-eighths majority.

Summary of ICC Jurisdiction and Structure

Category	Details
Prosecutable Crimes	Genocide, Crimes Against Humanity, War Crimes, Crime of Aggression
Jurisdictional Triggers	State party territory, State party national, or UN Security Council referral
Immunity Status	No immunity for official capacity (Article 27); immunity only for those under 18
Core Organs	Presidency, Divisions, Office of the Prosecutor, Registry
Amendment Threshold	2/3 majority to adopt; 7/8 ratification to enter force (general amendments)

Key Facts

• The ICC only prosecutes individuals, not states or organizations.
• Jurisdiction applies to crimes committed after July 1, 2002.
• Article 27 explicitly states that being a Head of State does not exempt a person from criminal responsibility.
• The UN Security Council can refer cases to the Prosecutor regardless of whether the state is a party to the Rome Statute.
• The Assembly of States Parties is the administrative oversight body of the Court.

Frequently Asked Questions

Can the ICC prosecute a sitting Head of State?

Yes. Under Article 27 of the Rome Statute, official capacity as a Head of State or Government does not exempt a person from criminal responsibility nor does it constitute a ground for reduction of sentence.

What happens if a state is not a party to the Rome Statute?

Generally, the Court lacks jurisdiction unless the crimes were committed by a national of a state party, occurred on a state party's territory, or the situation was referred to the Prosecutor by the UN Security Council.

What is the difference between Article 27 and Article 98?

Article 27 removes official immunities for those under the Court's jurisdiction. Article 98 addresses the conflict that arises when the Court asks a state to surrender a person who possesses diplomatic immunity from a third state that is not a party to the statute.

How is the ICC funded and managed?

The Court is supported by the Assembly of States Parties (ASP), which oversees the management of the Court and includes a Permanent Secretariat and an elected Bureau.

Can the list of crimes under the Rome Statute be changed?

Yes, the list of crimes can be amended. Unlike general amendments, changes to the list of crimes only apply to the states parties that specifically ratify the amendment and do not require a seven-eighths majority of all states parties.