WASHINGTON (CNN) – Sen. John McCain said any added military deployment in Afghanistan smaller than the 40,000 troops reportedly requested by the top U.S. commander there "would be an error of historic proportions." [cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2009/POLITICS/10/11/mccain.afghanistan/art.mccain.sotu.cnn.jpg caption="Sen. John McCain talks with CNN's John King about Afghanistan, health care reform, and Sarah Palin."] Asked whether he … Continue reading McCain: Avoid 'historic' error in Afghanistan