The US government has the legal authority to prosecute private contractors for crimes they commit in Iraq but often declines to use it, according to a report released today by…Human Rights First…The behaviour of contractors for Blackwater and other security firms has sparked resentment among Iraqi officials as well as civilians…"These violent attacks have created a culture of impunity that…promotes more abuse by contractors over time," the report states…The human rights report singles out ArmorGroup and Aegis Defence Services, another UK-based contractor, for tracking incidents involving firearms use by their employees, in contrast with US companies that do not routinely keep such records. [also refers to KBR]