In a surprising twist to one of the most drawn-out prosecutions in American history, a military judge has ruled that plea agreements struck with Khalid Sheikh Mohammed—allegedly the mastermind behind the September 11 attacks—and two co-defendants are valid.

This decision, an anonymous government official said on Wednesday, November 6, effectively overturned an order from Defense Secretary Lloyd Austin, who had tried to toss out the deals.

The ruling, handed down by Air Force Col. Matthew McCall, might not have hit the headlines with a bang just yet, but it’s a significant moment in the legal saga surrounding the 9/11 attacks. Let’s break it down.

9/11 Trials: A Decision Years in the Making

For over two decades, the US government has tried to bring Mohammed and his co-defendants, Walid bin Attash and Mustafa al-Hawsawi, to justice for their roles in the attacks that killed nearly 3,000 people.

But legal challenges, delays, and the murky waters of post-9/11 counterterrorism have kept the case in limbo.

The latest chapter unfolded when plea agreements, negotiated by government prosecutors and defense attorneys, were put on the table. These deals would allow the defendants to plead guilty in exchange for being spared the death penalty.

It wasn’t long before the agreements stirred the pot. Republican lawmakers and other critics were quick to voice their outrage, arguing that a crime of this magnitude deserved the ultimate punishment.

In response, Secretary Austin stepped in, issuing a brief order to nullify the deals. He argued that such a monumental decision should rest with him alone.