I never thought the race-war bozos would make it onto /. It's the usual propoganda: Name check someone prominent (who didn't say anything in support of your argument), add some bogus theory with no support (but imply that it comes from the famous names), through in a little kernel of plausibility (hey, there's racism right? Maybe we are all genetically pre-disposed to hate each other), and stir.
Much like different programming languages are optimized for different tasks, but you can create just about anything in just about any language, human populations are different based on the optimizations that came about through their branch divergence.
See? Hmmm ... seems plausible. But think: Maybe I'm different based on the country I was born in, the way my parents fed me, raised me (the fact that I had loving parents), their wealth and social connections, the forces and choices that formed my personality. My education, the books I read, what I chose to study, my teachers and role models, how hard I worked at it, how well I networked, the career and jobs I chose, the person I married, the city I live in ... Where does this genetic optimization come in?
I recommend the same books as burnitdown, only you should read them and not just name-check them. I read Huntington's Clash of Civilizations when it was first published in Foreign Affairs. It says nothing at all about genetics or "optimization", only super-national cultural groups called 'civilizations', which are genetically diverse (see list here ). You can read more here.
I haven't read Cavalli-Sforza, but The Economist seems to think that his work challenges the assumption that there are significant genetic differences between human races, and indeed, the idea that 'race' has any useful biological meaning at all. Hmmm ... that seems opposite the ideas that burnitdown cited.
So Burnitdown is just talking out of his backside, start to finish. There is no outside support for it at all. I can't even imagine how it applies to Georgia, Russia, and North & South Ossetia. Does anyone know closely their populations correlate genetically? And why, on that basis, would South Ossetians want Russian more than Georgian citizenship? What the heck is 'Russian' genetically, anyway -- the country stretches from Europe to the Pacific; are they really genetically homogeneous?
Whenever I read something like this, I always try to remember: Think of the people who promolgate this theory of inevitable race-war hatred: From Milosovic to Bin Laden (who rails against Jewish people) to the Rwandan Hutu extremists to the KKK to, yes, Adolf Hitler. What have they accomplished? Then think of those who say that humans can integrate and live together regardless of supposed 'race', from Thomas Jefferson to Abraham Lincoln to Martin Luther King Jr., to Mahatma Gandhi and almost any current leader of prominence. Who has been more successful? Whose side would you rather be on?
Did you know that by the 3rd generation, most immigrants to the US marry across 'cultural' lines? Did you know that the rate of interracial marriage has increased ~700% in the US since 1970 [1]?