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...The lead should be able to stand alone as a concise overview of the article. It should establish context, explain why the subject is interesting or notable, and summarize the most important points—including any notable controversies that may exist...
The lead must conform to verifiability and other policies. The verifiability policy advises that material that is challenged or likely to be challenged, and quotations, should be cited. Because the lead will usually repeat information also in the body, editors should balance the desire to avoid redundant citations in the lead with the desire to aid readers in locating sources for challengeable material. Leads are usually written at a greater level of generality than the body, and information in the lead section of non-controversial subjects is less likely to be challenged and less likely to require a source; there is not, however, an exception to citation requirements specific to leads. The necessity for citations in a lead should be determined on a case-by-case basis by editorial consensus. Complex, current, or controversial subjects may require many citations; others, few or none. (emphasis added)
I am reverting the edits because the material was 'duplicated' (though not, I believe, identical) to reflect thte fact that material should not appear only in the lead and not in the body of the article, and leaving the refs in the body because i didn't think it was particularly controversial content that should be immeidately cited. The thing about where the refs should be is a judgement call and I'm happy to see them moved if other editors think differently, but I'm pretty sure keeping the content as it was is consistent with WP policy. Cheers.hamiltonstone (talk) 04:44, 20 March 2009 (UTC)