The trial may break new legal ground, potentially setting limits on the extent to which solicitors need to prove allegations to their own satisfaction before they can bring them to court.
I'm going to show my ignorance of the law here but I thought you already had to have an honest belief that your client was innocent to defend them. The allegations here suggest the lawyers knew the 'defendants' were Mahdi army fighters so no new legal ground needs to be covered.
What am I missing?