Retrieved 29 July 2015. ↑ David Cloud for the New York Times. May 21, 2007 7 U.S. Soldiers Die in Iraq, 6 in Sweep of Baghdad ↑ "People's Daily Online -- Chlorine truck bomb hits police checkpoint in western Iraq". Retrieved 29 July 2015. ↑ U.S. says 14 soldiers slain in Iraq - Los Angeles Times Archived 2009-04-14 at the Wayback Machine