The Wall Street Journal explains why the Moussaoui case is important
The further we move away from 9/11 without another domestic attack, the more tempting it is to believe that awful day was an aberration, to think that we can return to normalcy if we merely leave Iraq and the other Middle Eastern regimes to their own purposes. But the forces of radical Islam aren't going to leave us alone merely because we decide that resisting them is too hard. The men and women on that plane weren't soldiers overseas; they were traveling to work, or on vacation, or to their homes within the United States.
The main political difference in the U.S. today is between those who appreciate that Islamic terrorists represent an existential threat to American life and liberty and are prepared to do what it takes to defeat them, and those who think the threat is overstated and can be ameliorated or appeased. Only yesterday, al Qaeda kingpin Ayman al-Zawahiri exulted in a videotape posted on the Internet that "the enemy has begun to falter." He's wrong, but the transcript of Flight 93 is a reminder of our fate if we do.
There's more detail about the case
on the BBC News website devoted to it, including this quote:
Moussaoui took the stand against his lawyers' advice on the opening day of their defence.
He gave a lengthy explanation about why he hates Americans, and criticised US support for Israel.
"You are the head of the snake for me. If we want to destroy the Jewish state of Palestine, we have to destroy you first," he told the court.
He turned to the Koran for evidence he said backed up his claims that Muslims are called to fight for supremacy for Allah.
"We have to be the superpower, we have to be above you," he said.