Op and LiveF, it's really not that difficult:
Wikipedia articles should present the view of the majority of reliable and widely accepted sources. In this case the ICTY, which is also what the article does (sometime word by word, but that's another discussion).
If there is a minority view, Wikipedia articles should also present those. In this case the minority view is that of MacKenzie, Johnston & Co.. Wikipedia:NPOV is quite clear about things such as Bias, Fairness of tone and Letting the facts speak for themselves. Maybe a solution would be just call it "Minorty views"? Regards