premise: The deaths of six more US soldiers in Iraq Monday raised the US military death toll for October to 93, making it the worst month for US troops since January, the US military said.
  The US death toll for the Iraq war just broke the 2,000 mark last week.
  Pentagon spokesman Lawrence DiRita attributed the increased deaths to "an adversary that continues to develop some sophistication on very deadly and increasingly precise standoff weapons."
  Among the six soldiers who died Monday, four were killed by a makeshift bomb in the Yusufiyah district, southwest of Baghdad, and two other soldiers were killed in an explosion while on patrol near the Anaconda base, on the outskirts of Balad, north of the capital, the military said.
  The week's casualties included the highest ranking army officer killed in action since the start of the war, Colonel William Wood, who died Sunday when an improvised bomb hit his vehicle near al-Amiriyah, west of Baghdad.
   What was the reason for the highest ranking army officer being killed?
hypothesis: The deaths of six more US soldiers in Iraq Monday