I think a lot of the blame for Bigley's death must lie with the occupiers....Bush and Blair.
They offer huge sums of money to entice people to work in Iraq,   not for the good of the Iraqis, but to try to give the impression that things are on track for the wonderful new "democratic" Iraq,and so save face over their blunder.
The politicians know very well the risks which await foreign workers, but are quite prepared to gamble with workers lives in their own interests.
And dont listen to any shit about not negotiating with "terrorist",
the politicians have always negotiated, because they know only too well the terorists *always* win.