ICC Prosecutor Urges Rejection of Philippines' Appeal Against Drug War Probe

The International Criminal Court's chief prosecutor has made his position unmistakably clear: the Philippines cannot stop what the court has already authorized. In a 59-page filing submitted to the ICC's appeals chamber in April 2023, Prosecutor Karim Khan rejected the Philippine government's attempt to block an ongoing investigation into thousands of deaths during the country's drug war under former President Rodrigo Duterte.

The sequence of events had been swift and contentious. In January, the ICC's pre-trial chamber voted to resume its probe into the drug war killings. Within weeks, the Philippine government—now led by President Ferdinand Marcos Jr., who has maintained close ties to Duterte—filed notice of appeal and simultaneously requested that the court suspend all investigative work while the appeal proceeded. The ICC rejected the suspension request on March 27. The actual appeal itself remained pending, awaiting Khan's response and the chamber's eventual ruling.

Khan's filing systematically dismantled each argument the Philippine government had advanced. On the question of whether the court even had the legal authority to investigate, Khan pointed to a straightforward timeline: the alleged crimes occurred between November 2011 and March 16, 2019. The Philippines did not withdraw from the Rome Statute—the treaty establishing the ICC—until March 17, 2019. That single day of difference meant the court retained jurisdiction. The Philippines had been a party to the statute when the crimes in question took place, and that was the legal threshold that mattered.

The Philippine government had also argued that its own domestic investigations were sufficient and that the ICC should defer to them. Khan disagreed on both counts. He noted that the pre-trial chamber had already examined the Philippine National Bureau of Investigation materials, the National Prosecution Service records, and the Philippine National Police Internal Affairs Service disciplinary proceedings. The chamber had concluded that these domestic efforts did not match the scope or rigor of what an international investigation required. Khan agreed with that assessment. He also emphasized a point the Philippines seemed to misunderstand: a state's willingness to cooperate with the ICC is not a precondition for the court to exercise its jurisdiction. The Philippines could refuse to cooperate, but that refusal could not strip the court of its legal authority to investigate.

The human toll underlying these legal arguments was substantial. Government figures documented at least 6,252 deaths in police anti-drug operations as of May 2022. But human rights organizations, accounting for vigilante-style killings that occurred alongside the official campaign, estimated the total between 27,000 and 30,000. The investigation also touched on the alleged Davao Death Squad, a shadowy group accused of extrajudicial killings in Duterte's home city before he became president.

Khan's filing made clear that the ICC's investigation was still in its early stages. It did not yet extend to high-ranking officials, to killings by private individuals outside police operations, or to the Davao killings themselves. The scope remained narrow and focused. But that narrowness was precisely the point: the investigation was authorized, it was proceeding methodically, and the Philippines had not demonstrated any legal error that would justify halting it.

The appeals chamber now faced a straightforward choice. It could accept Khan's reasoning and let the investigation continue, or it could overturn the pre-trial chamber's decision and shut the probe down. The outcome would determine whether the ICC could pursue what many in the international human rights community viewed as one of the most significant investigations into alleged mass killings in recent years—or whether a state could successfully use procedural appeals to block accountability for thousands of deaths.