RE: US now admits it used chemical weapons against Iraqis
There is no logic to it. He was saying that it is wrong of the US to deal with Iraq now because we didn't in the past.
And it gets tiresome reading this moral equivalence nonsense. If you really think the US is as vile as Saddams regime then there's no point in discussing this topic.
It's like comparing a serial killing criminal to a police officer that uses force to stop him then equating the two because they both were violent.