On 13 June 2025, the Global Institute for the Prevention of Aggression co-organized with the Permanent Missions of Sierra Leone and Switzerland to the United Nations and the Federal Department of Foreign Affairs of Switzerland seminar for Legal Advisors of Permanent Missions to the UN of States Parties to the Rome Statute. The seminar focused on the amendment proposal with respect to harmonizing the jurisdiction of all four Rome Statute crimes. Welcoming remarks were provided by Ambassador Pascale Baeriswyl, Permanent Representative of Switzerland, and Ambassador Michaela Swallow, Deputy Permanent Representative of Sierra Leone, as well as Ambassador Juan José Quintana (Colombia), Chair of the Working Group on Amendments of the Assembly of States Parties to the Rome Statute.

The seminar featured six members of GIPA as speakers: Executive Council member Ambassador Christian Wenaweser, and Council of Advisers’ members Judge Daniel Nsereko, and Professors Patrycja Grzebyk, Astrid Reisinger Coracini and David Donat Cattin, as well as GIPA’s Convenor, Professor Jennifer Trahan.  Hosted in the Mandela Hall of the African Union in New York, the Seminar was structured in four substantive sessions focusing on the rationale for the amendments, the analysis of the amendments proposal presented by 5 States representing all regional groups, the mechanism for entry into force, and other procedural and substantive issues impacting the fight against impunity for the most serious crimes of concern to the International Community as a whole. The event was attended by approximately 100 representatives of 75 States Parties and served to advance understanding and awareness of the legislative mandate on the upcoming review of the Kampala amendments by the ASP Special Session in July.