geneva children starve death central african republic violence force aid workers pull unite nations humanitarian coordinator country say tuesday four years conflict begin muslim seleka rebel christian anti-balaka militias central african republic seem calm early part year violence flare since may turn southeast virtual no-go area humanitarian assistance even half nothing possible humanitarians stay coordinator najat rochdi say start already see children die severe malnutrition lack fund already force aid workers halve food aid place stop completely despite widespread malnutrition children five-years-old hear able confirm far 10 kid die malnutrition long humanitarians go difficult us confirm rochdi say violence often ethnically base ting suspicions witchcraft late u.n. humanitarian report say four children abduct kill town bambari body find organs remove town kembe 40 people reportedly kill wound clash arm group oct. 10 say number displace people jump 50 percent 600,000 year addition 500,000 flee neighbor countries rochdi say 400,000 children go school overcrowd camp average 30,000 displace people fertile recruit ground arm group unite nations try clear weapons fighters get people back home wherever possible u.n. peacekeeping force 11,600 strong country size france belgium combine government struggle create army hold territory maraud gunmen unite state uganda withdraw force declare victory april lord resistance army lra maraud gang notorious abduct recruit child soldier rochdi say withdrawal leave vacuum lra attack continue sporadically central african republic children starve aid workers flee fight