Explore the list of countries that have ratified the Rome Statute, the founding treaty of the International Criminal Court. This compilation highlights the global commitment to international justice and the fight against crimes of genocide, crimes against humanity, and war crimes. Discover which nations have formalized their adherence, contributing to a legal framework that seeks global accountability. Ideal for international law students, researchers, and anyone interested in global governance and human rights.
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Argentina
0 Global Votes
Ratified the Rome Statute
Argentina ratified the Rome Statute in November 2000, demonstrating its commitment to international criminal justice. Furthermore, it adopted Law 26.200 in December 2006, which incorporates the Statute's provisions on genocide, crimes against humanity, and war crimes into its national legislation.
Canada was the first country in the world to incorporate the obligations of the Rome Statute into its national laws, adopting the Crimes Against Humanity and War Crimes Act on June 24, 2000. It subsequently ratified the Rome Statute on July 9, 2000, demonstrating an early and significant commitment to the International Criminal Court.
Colombia signed the Rome Statute in 1998 and ratified it in 2002, becoming one of the 125 States Parties. The country has demonstrated ongoing commitment to the International Criminal Court, including signing a voluntary cooperation agreement for the enforcement of ICC sentences.
Costa Rica ratified the Kampala Amendments to the Rome Statute of the International Criminal Court on February 5, 2015, becoming the 22nd State to do so. This action demonstrates its strong commitment to international justice and the fight against impunity for the most serious crimes of concern to the international community.
Croatia ratified the Rome Statute on May 21, 2001, becoming the 32nd State Party. This action demonstrates its strong commitment to international criminal justice and the global rule of law. The country fully cooperates with the International Criminal Court and has actively participated in working groups on crimes of aggression.
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Spain
0 Global Votes
Ratified the Rome Statute
Spain ratified the Rome Statute on October 17, 2025, solidifying its commitment to international justice. The country has been a staunch supporter of the International Criminal Court since its inception, actively backing its functions and contributing to its funding.
France ratified the Rome Statute in 2000, becoming a State Party to the International Criminal Court. It has demonstrated its commitment to international justice by adopting the Law on Cooperation with the ICC in 2002 and making significant voluntary contributions to the Court.
Germany ratified the Rome Statute on December 11, 2000, becoming the 25th State Party and demonstrating an early and strong commitment to international criminal justice. Since the International Criminal Court began operations in 2002, Germany has been the second highest financial contributor and a consistent supporter of the institution.
Italy ratified the Rome Statute on July 26, 1999, becoming the 4th State Party to the Rome Statute of the International Criminal Court. Its swift adherence underscores its commitment to international justice and the establishment of a permanent court for grave crimes. The adoption of Law No. 232 facilitated this process, demonstrating its leadership in promoting international criminal law.
Japan ratified the Rome Statute, demonstrating its commitment to international criminal justice and the fight against the most serious crimes. In doing so, the Japanese government concluded that acts of genocide and crimes against humanity could be punished under its existing national legislation, without the need to create crimes with those specific names. This stance highlights the adaptability of its legal framework to address such atrocities.
Mexico ratified the Rome Statute of the International Criminal Court on October 28, 2005, with its entry into force on January 1, 2006. This action made it the 100th State Party to the Statute, demonstrating its strong commitment to international justice and the fight against impunity for the most serious crimes.
One of the first to enact implementing legislation
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New Zealand was one of the first states to enact legislation implementing the Rome Statute into domestic law, directly incorporating the Statute's crimes. It considers the International Criminal Court a central pillar in the international rules-based system, demonstrating a strong commitment to international justice.
Paraguay ratified the Rome Statute on May 14, 2001, demonstrating its commitment to justice for atrocity crimes and strengthening the Rule of Law. The Paraguayan parliament has approved the implementing legislation for the International Criminal Court, incorporating Rome Statute crimes into its domestic law.
Peru ratified the Rome Statute on November 10, 2001, solidifying its commitment to international criminal justice. The country has enacted extensive legislation enabling effective cooperation with the International Criminal Court, standing out in the region for its efforts in this area.
Ratified the Statute of the International Criminal Court
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The United Kingdom ratified the Rome Statute on October 3, 2001, making it one of the 60 states whose ratifications were crucial for the Statute to enter into force. This act established it as a founding member of the International Criminal Court, demonstrating its strong support for international justice. Furthermore, the country has actively pushed for the ICC's mandate over crisis situations in non-member countries, including Syria and Libya.
South Africa ratified the Rome Statute, the founding treaty of the International Criminal Court, and implemented it into its domestic law through the Rome Statute Implementation Act of 2002. The country has demonstrated an ongoing commitment to international justice, actively participating in both the International Criminal Court and the International Court of Justice.
Sweden ratified the Rome Statute on June 28, 2001, becoming the thirty-sixth state to do so. This act underscores its strong commitment to international justice and the fight against impunity for serious crimes. Furthermore, Sweden has led the "Group of Friends of the ICC" at the United Nations, demonstrating its active role in supporting and strengthening the Court.
Switzerland has ratified the Rome Statute, demonstrating its commitment to international justice and the fight against impunity for the gravest crimes. Furthermore, it has ratified all seven amendments to the Statute, including those granting the International Criminal Court jurisdiction over the crime of aggression and expanding the definition of war crimes.
This ranking evaluates which nations have ratified the Rome Statute, the founding treaty of the International Criminal Court. It highlights countries' commitment to global justice and international law.
A country is included in this list if it has deposited its instrument of ratification of the Rome Statute with the United Nations. Ratification formalizes its legal commitment to the treaty.
The results show the level of global adherence to the Rome Statute. A higher number of ratifications indicates a broader commitment to the International Criminal Court and its principles of justice.
As of the latest information, 125 countries are States Parties to the Rome Statute of the International Criminal Court, demonstrating a significant commitment to global justice.
How we built this ranking and what to consider when choosing
This ranking is compiled with the aim of providing a clear and up-to-date overview of the nations that have ratified the Rome Statute, the treaty establishing the International Criminal Court. The methodology focuses on verifying the formal adherence of each country.
Inclusion in this ranking is based exclusively on the formal ratification of the Rome Statute by a sovereign state, as confirmed by the United Nations.
The date of ratification is considered a factor in understanding the historical evolution of support for the Statute, although the primary ranking focuses on the current status as a State Party.
The total number of States Parties is highlighted to provide a general overview of the global reach of the treaty.
Information is updated periodically to reflect new ratifications, such as Ukraine's recent accession, becoming the 125th State Party.
The fundamental criterion for inclusion is that the country has ratified the Rome Statute of the International Criminal Court.
States that have completed the legal process of ratification, depositing the relevant instrument with the Secretary-General of the United Nations, are included.
Countries recognized as States Parties by the Assembly of States Parties to the Rome Statute are considered.
The list is updated to reflect the current number of States Parties, which currently stands at 125 nations.