An 8-year-old policy that forbids government contractors and employees to engage in sex trafficking in war zones has proved almost impossible to enforce amid indications that such activities are occurring in Iraq and Afghanistan…"Zero prosecutions," said Martina Vandenberg, a lawyer and former Human Rights Watch investigator, "suggests zero effort to enforce the law." The State Department reported recently that allegations of contractors' employees procuring commercial sex acts were "well-publicized" but that no contractors have been prosecuted and no contracts terminated…[Refers to Dyncorp, Blackwater]