Have you ever met a Caucasian Middle-Eastern man before?
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Yeah, actually. If you're talking about the caucasoid skull, that can show up with several different skin colors. If you're talking about white skin, you can find that (natively) as far south as Northern Africa. Even if you're calling it blonde hair and blue eyed, you can still find examples of that in the middle east and Asia. I'm not saying this gives any weight to claims that Jesus was white (I'm inclined to believe that he actually didn't exist as a person), just that your reasoning for why he wasn't isn't the best.