“A villager welcomes visiting nurses to his compound.”The central government of Afghanistan once oversaw various rural development programs, including one, pictured here, that sent nurses in jeeps to remote villages to inoculate residents from such diseases as cholera. Now, security concerns alone make such an effort nearly impossible. Government nurses, as well as U.N. and NGO medical workers, are regular targets for insurgent groups that merely want to create disorder and terror in society.