Our purpose: Promoting peace through criminal justice – preventing crimes of aggression

Through the United Nations Charter, States have expressed their commitment “to save succeeding generations from the scourge of war”. They have agreed to renounce the illegal threat or use of force, and to settle their disputes “by peaceful means in such a manner that international peace and security, and justice, are not endangered”. States have the legal duty to abide by this commitment and the UN Security Council has the primary responsibility to enforce it.The Nuremberg Trials made it clear that criminal justice also has an important role to play for the promotion of peace and the deterrence of acts of aggression – though it remained limited and theoretical for many decades thereafter.  With the 2010 Kampala amendments to the Rome Statute of the International Criminal Court, States Parties created a new mechanism to enforce the most important rule of international law: the prohibition of the illegal use of force under the United Nations Charter. This website is dedicated to making accountability a reality.

The Global Institute for the Prevention of Aggression (GIPA) informs about the current delevopments related to the crime of aggression:

News

12 OCT 2026

Keynote address at the 2026 Nuremberg Forum: On 7 October 2026, GIPA member Prof. Dr. Claus Kreß delivered the keynote address at the 2026 Nuremberg Forum dealing with the current situation of the crime of aggression 80 years after the Nuremberg trial. For his keynote address, see here. 

12 OCT 2026

Remarks of GIPA Convenor Professor Jennifer Trahan, Case Western Reserve University School of Law: On October 1, 2026 the Case Western Reserve University School of Law hosted a symposium on “The Legacy of Nuremberg: An International Conference Commemorating the 80th Anniversary of the Nuremberg Judgment”. GIPA Convenor Professor Jennifer Trahan’s remarks address whether the United States, in its policies and practices, has repudiated  the lessons from the prosecutions before the International Military Tribunal (“IMT”) at Nuremberg. For her remarks, see here.

12 OCT 2026
Standing Group of Atrocity Crimes: On 8 June 2026, the United Kingdom’s All Party Parliamentary Group on International Law, Justice and Accountability hosted a hearing of experts of the Standing Group of Atrocity Crimes at the UK Houses of Parliament. The Standing Group of Atrocity Crimes was set up in 2025 to convene an independent review of, and provide comprehensive advice on, the UK’s approach to atrocity prevention and response. Among the speakers of the hearing in June, GIPA member Prof. Dr. Claus Kreß urged the UK government to support international efforts to strengthen accountability for the crime of aggression. For his expert evidence, see here. 
20 SEP 2026

Conference in Montreal: Six members of the Global Institute for the Prevention of Aggression were in Montreal, speaking at the conference “Canada and the International Use of Force Regime: Preserving, Reforming, and Rebuilding the Rules-Based Order”.  It was hosted at McGill University, Faculty of Law, on September 18, 2026.

Christian Wenaweser served as Keynote speaker. Noah Weisbord organized along with David Donat Cattin. Jennifer Trahan and Bill Schabas served as panelists, with Judge Daniel Nsereko joining. The event was at capacity, with some of the most prominent Canadian academics and NGOs contributing as panelists, and representatives of the Government of Canada and law students attending. The conference served to highlight the 2029 deadline for the harmonization amendment and urged Canada to change its position. 

 

23 AUG 2026
Vienna panel on “Harmonizing the Exercise of the International Criminal Court’s Jurisdiction Over all Core Crimes”: While in Vienna for the 82nd annual conference of the International Law Association, August 17-21, the University of Vienna, the Global Institute for the Prevention of Aggression and the Montreal Institute for Global Security sponsored a panel entitled “Harmonizing the Exercise of the International Criminal Court’s Jurisdiction Over all Core Crimes: The Way Ahead for the Crime of Aggression.” Claus Kreß, Patrycja Grzebyk, Patryk Labuda and Jennifer Trahan spoke on the panel, with Astrid Reisinger Coracini moderating.

 

05 AUG 2026

Updated Paper for States: On 5 August 2026, the Global Institute for the Prevention of Aggression published an updated policy paper that summarizes why states parties should ratify the Kampala crime of aggression amendments. For the paper, see here.

31 JUL 2026
Interview of Claus Kreß at the Universidad Externado de Colombia: On 11 May 2026, GIPA member Professor Dr. Claus Kreß gave an online interview at the Universidad Externado de Colombia. He discussed the current challenges of the prohibition of the use of force and international criminal justice in general and the importance of the criminal sanction for the crime of aggression in that respect. The interview also includes an analysis of the role of the International Criminal Court (ICC) in the current geopolitical context, the tensions arising from the US sanctions against the ICC and its officials, as well as the challenges these scenarios pose to judicial independence, international cooperation, and the enforcement of international criminal law. For the full interview with Spanish sub-text, see here.
24 JUL 2026

Book on the Crime of Aggression and Russia’s Invasion of Ukraine: Congratulations to Professor Jennifer Trahan on the launch of her new book The Crime of Aggression and Russia’s Invasion of Ukraine (TMC Asser Press 2026). The 300 page book explores the history of the crime of aggression from the 1800s to the present. It traces the events leading to, and including Russia’s invasion of Ukraine, analyzing why the elements of the crime of aggression are satisfied. The book goes on to describe the various efforts to establish a special tribunal for the crime of aggression in the situation. It analyzes the key features of the agreement reached between the Council of Europe and Ukraine to establish such a tribunal. The book culminates in an explanation of why broader jurisdiction over the crime of aggression is needed, and explores the efforts to harmonize the International Criminal Court’s jurisdiction over all four Rome Statute crimes. For more details, see here.

← Older Entries