In January, I was retained by the prosecutor of the International Criminal Court (ICC), Karim Khan, who is facing an investigation into allegations of misconduct and abuse of authority. I was tasked with undertaking a gender-competent analysis of the then-undisclosed evidence collected by the United Nations Office of Internal Oversight Services (OIOS), which was tasked by the president of the Assembly of States Parties (ASP) with the inquiry.

I would also lead the drafting of defence submissions to the Judicial Panel, comprising three eminent judges selected by the Bureau of the ASP, the ICC’s executive oversight body. The Judicial Panel was charged with legally characterising any facts found by the OIOS in the course of its investigation. This process, not contemplated in existing court regulations, was designed and implemented by the bureau and established specifically for this complaint.

As a condition of receiving the disclosure, I signed a confidentiality agreement that bars me from discussing the evidence. I am permitted, however, to respond to any inaccurate or misleading information placed into the public domain. I intend to abide by these obligations in this article.

The OIOS’s investigation began in November 2024 and ran until December 2025. All parties had lengthy interviews and were able to submit any material that they believed to be relevant. OIOS investigators also interviewed many others and independently collected material. Contrary to what has been reported with regard to the allegation of sexual misconduct, there are no corroborating witnesses. The material collected ran to more than 5,000 pages.

The Judicial Panel spent three months reviewing the OIOS report and the mass of underlying material. In March,........

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