Where in the world seems to have the highest percentile of NST? In the Middle-east there can seem to be an equilibrium between NST and NA/NPA+ types in many areas. Does the Arabian peninsula i.e. Saudi Arabia/Yemen/Oman seem to be the epicentre of non-sanguinity or could the percentile be higher in say, Jordan, or eastern Iraq? It is interesting to note the preponderance of A types in Yemen and Palestine, like A types were associated with the western coast of the Arabian peninsula.
But it seems to me that Western Russia/neighbouring regions might in fact have the highest percentile of NST in the world. They seem to be extremely common there from what I've seen.