If I were a defense attorney, yes. But with a caveat. I would be there only to be sure that his right to a fair trial wasn't violated. I wouldn't try to mount a defense for his actions, only to work within the confines of the courtroom with the presiding judge to be sure he got a fair trial.
I believe that he's a megalomaniac and a sociopath, and as such has a mental defect. His cultural norms are very different from those we value in the "free world", and as such, some things that we might find to be terrible actions are perfectly acceptable under the laws of his country.
Although I believe that he knew right from wrong, and could anticipate the consequences of his actions, I believe that in his mind what he did was perfectly acceptable and legal.
Although the emotional side of me thinks he should be tossed out into a public square in Iraq and let the citizens of that area do what they will with him (likely death by stoning), the logical side of me feels that he is entitled to a fair trial, and that his punishment needs to be determined by a judge if he is found guilty. To do otherwise would simply make him a martyr in his cause.
Anne