It's at the very end of the debate, 1:38. He doesn't say "There will be no war...", though, although I vaguely recall him saying something like that earlier in the debate.
I was really appalled listening to that when he described the upcoming attack as "dazzling".
> ------------------------------
>
> Date: Sun, 30 Mar 2003 22:49:32 -0500
> From: Doug Henwood <dhenwood at panix.com>
> Subject: Hitch
>
> A friend writes to point out:
>
> >According to the Observer one C. Hitchens said on 28 Feb the
> >following: "There will be no war--there will be a fairly brief and
> >ruthless military intervention. The President will give an order.
> >[The attack] will be rapid, accurate and dazzling...It will be
> >greeted by the majority of the Iraqi people as an emancipation."
>
> Also, CH thought they Rep Guard would fold quickly because "no one
> wants to be the last to die for Saddam Hussein."
>
> Doug