Uhm.... What evidence would count as unbiased by your standards? I ask because I wonder whether such evidence could realistically exist. You sound as if your

Uhm.... What evidence would count as unbiased by your standards? I ask because I wonder whether such evidence could realistically exist. You sound as if your requirement is data collected by someone who really, absolutely has no interest in the conflict, but still cares enough to cover the area with radar or similar.