From Holden:

Colin Powell, then and now.

Then:

“There can be no doubt that Saddam Hussein has biological weapons and the capability to rapidly produce more, many more,” Powell said then, at one point holding up a vial of simulated biological agent — an image broadcast around the world.

“Our conservative estimate is that Iraq today has a stockpile of between 100 and 500 tons of chemical weapons agent,” he said at the time.

And now:

“I think it’s unlikely that we will find any stockpiles,” Powell told lawmakers when asked about the intelligence behind his Feb. 5, 2003, U.N. Security Council speech laying out U.S. arguments for the war with Iraq that began six weeks later.

BONUS: The BBC’s Iraq FUBAR map.