Resistance to the U.S. occupation in Iraq has intensified for a fourth day. On Tuesday 12 U.S. soldiers died in a firefight near Ramadi bringing the US death toll in the last few days to at least 20. Over 150 Iraqis have been killed including 26 in Falluja where US warplanes bombed a residential Sunni area. 16 children and eight women were killed in that attack.