TAKING THE LEADWho led the fighting in Najaf?http://seattletimes.nwsource.com/html/nationworld/2003545907_najaf29.htmlIraqi officials said today that U.S.-backed Iraqi troops . . .http://www.cnn.com/2007/WORLD/meast/01/29/iraq.main/index.htmlU.S. forces took the lead . . .http://www.washingtonpost.com/wp-dyn/content/article/2007/01/29/AR2007012901752.html"This fight is an indication of what is