9/11 Mastermind Khalid Sheikh Mohammed Set for 2028 Trial

Nearly a quarter-century after the September 11 attacks, a military judge has finally anchored a trial date to the case against the man accused of orchestrating them. Khalid Sheikh Mohammed and three alleged co-conspirators will face trial in 2028, according to the ruling handed down by the judge overseeing their military commission proceedings at Guantánamo Bay.

The decision marks a concrete milestone in a legal process that has moved with glacial slowness since these detainees were first captured. Mohammed, widely identified as the principal architect of the 9/11 plot, has been held at the detention facility for years while his case wound through layers of military justice proceedings. The three men charged alongside him—Walid bin Attash, Ramzi bin al-Shibh, and Mustafa al-Hawsawi—face the same trial date, suggesting the military commission intends to consolidate their cases.

The path to this 2028 date has been anything but straightforward. The military commission system itself has proven cumbersome, burdened by legal challenges, procedural disputes, and the sheer complexity of prosecuting cases of this magnitude within a framework that exists outside the civilian court system. Delays have accumulated over years—some driven by defense motions, others by questions about the admissibility of evidence, still others by the fundamental difficulty of managing a case involving classified information, detainee treatment, and questions about the legitimacy of the proceedings themselves.

The 9/11 attacks killed nearly 3,000 people across New York, Washington, and Pennsylvania on a single morning in 2001. The attacks reshaped American foreign policy, national security apparatus, and domestic law for decades to come. Yet the legal accountability for those who planned and executed the attacks has remained incomplete. While other figures involved in the plot have faced trial in civilian courts or been killed in military operations, the case against Mohammed and his co-conspirators has remained suspended in the military justice system.

The 2028 trial date is not necessarily final. Legal motions, appeals, and procedural challenges could still alter the timeline. Defense attorneys may file motions to delay or dismiss. Questions about the admissibility of evidence obtained during detention could resurface. The military commission has faced criticism from human rights organizations and legal scholars who question whether it can provide a fair trial, particularly given the years of detention and the circumstances under which evidence was gathered.

For families of 9/11 victims, the announcement of a trial date—even one years away—represents a step toward the accountability they have long sought. For the detainees themselves, it signals that the legal process, however delayed and contested, continues to move forward. The 2028 date now stands as a marker: the year when the military justice system will finally attempt to adjudicate the charges against the men accused of planning one of the deadliest attacks on American soil.