Part of the transcript follows. If he's talking about the battle of Tora Bora in October 2001, and calling it "last year," how old is this tape?
"I had referred to that in a previous statement during the Tora Bora battle last year.
In that great battle, faith triumphed over all the materialistic forces of the people of evil, for principles were adhered to, thanks to God Almighty.
I will narrate to you part of that great battle, to show how cowardly they are on the one hand, and how effective trenches are in exhausting them on the other.
We were about 300 mujahideen [Islamic militants]. We dug 100 trenches that were spread in an area that does not exceed one square mile, one trench for every three brothers, so as to avoid the huge human losses resulting from the bombardment.
Since the first hour of the US campaign on 20 Rajab 1422, corresponding to 7 October, 2001, our centers were exposed to a concentrated bombardment."