Former Philippine President Rodrigo Duterte’s Fitness for ICC Trial Questioned Over Cognitive Issues

Former Philippine President Rodrigo Duterte is facing questions about his fitness to stand trial before the International Criminal Court (ICC), with his defense citing a deteriorating cognitive condition that they say impairs his reasoning, memory, and daily functioning.

The ICC documents, made public on September 11, 2025, show that Duterte’s legal team formally requested that judges determine whether he is mentally competent to face the charges associated with alleged killings during his administration’s war on drugs. These charges include multiple counts of murder of alleged drug offenders.

The defense claims that Duterte, now 80, suffers from cognitive decline affecting his executive functioning and orientation. They argue that this condition undermines his ability to meaningfully participate in his defense and understand the proceedings. Meanwhile, court filings show that details and the precise medical condition have been redacted, leaving some uncertainty.

Judges have postponed hearings on the confirmation of charges, which had been scheduled later this month, to first resolve the fitness issue. It is not yet known when a decision will be made on whether the trial will proceed or be delayed.

Experts say that it is rare for international courts to declare suspects wholly unfit for trial, even when they are elderly. If a finding of unfitness is made, it may not automatically result in release; instead, the court may impose other measures, depending on the specific findings and legal frameworks.

Observers note that the case could set significant precedent at the ICC, regarding how cognitive impairment claims are evaluated. The outcomes may impact not only Duterte’s case but also broader jurisprudence on trial fitness, aging defendants, and rights of the accused in international law.