The International Criminal Court opened a three-day hearing Wednesday at which prosecutors and victims aim to overturn a decision scrapping a proposed investigation into alleged crimes in Afghanistan’s brutal conflict.

Fergal Gaynor, a lawyer representing 82 Afghan victims, called it “a historic day for accountability in Afghanistan.”

In April, judges rejected a request by the court’s prosecutor, Fatou Bensouda, to open an investigation into crimes allegedly committed by the Taliban, Afghan security forces and American military and intelligence agencies.

In the ruling, which was condemned by victims and rights groups, the judges said that an investigation "would not serve the interests of justice" because it would likely fail due to lack of cooperation.

The decision came a month after U.S. Secretary of State Mike Pompeo banned visas for ICC staff seeking to investigate allegations of war crimes and other abuses by U.S. forces in Afghanistan or elsewhere.

“Whether the two events are in fact related is unknown, but for many ? victims as well as commentators ? the timing appeared more than coincidental,” said lawyer Katherine Gallagher, who was representing two men being held at the Guantanamo Bay detention facility.

The United States is not a member of the global court and refuses to cooperate with it, seeing the institution as a threat to U.S. sovereignty and arguing American courts are capable of dealing with allegations of abuse by U.S. nationals.