▁Arab ▁Red ▁C res cent ▁were ▁allowing ▁the ▁Sy rian ▁government ▁to ▁inter f ere ▁with ▁aid . ▁On ▁ 1 9 ▁September , ▁an ▁attack ▁hit ▁a ▁UN - Red ▁C res cent ▁aid ▁con voy ▁in ▁re bel - h eld ▁U rum ▁al - K ub ra , ▁killing ▁at ▁least ▁ 1 4 ▁people ▁and ▁destroy ing ▁ 1 8 ▁tr uck loads ▁of ▁food , ▁according ▁to ▁the ▁International ▁Federation ▁of ▁Red ▁Cross ▁and ▁Red ▁C res cent ▁Soci eties . ▁The ▁vehicles ▁were ▁hit ▁by ▁around ▁five ▁miss iles ▁while ▁park ed ▁at ▁a ▁Red ▁C res cent ▁w are house ▁for ▁un loading . ▁Stephen ▁O ' B rien , ▁UN ▁Under - Secret ary - General ▁for ▁Human itar ian ▁Affairs ▁and ▁Emer gency ▁Rel ief ▁Co ordin ator , ▁said ▁that ▁if ▁the ▁target ing ▁was ▁deliber ate ▁it ▁would ▁be ▁a ▁war ▁crime . ▁An onymous ▁U . S . ▁officials ▁bl amed ▁Russia , ▁saying ▁two ▁Russian ▁Su k ho i ▁Su - 2 4 ▁war plan es ▁were ▁flying ▁over ▁the ▁aid ▁con voy ▁at ▁the ▁precise ▁time ▁it ▁was ▁struck . ▁The ▁Russian ▁Def ense ▁Ministry , ▁however , ▁denied ▁that ▁either ▁its ▁forces ▁or ▁the ▁Sy rian ▁air ▁force ▁were ▁responsible ▁and ▁disput ed ▁the ▁cont ention ▁that ▁the ▁UN ▁vehicles ▁had ▁been ▁hit ▁by ▁any ▁m un itions , ▁ins inu ating ▁that ▁the ▁Sy rian ▁Civil ▁Def ense ▁may ▁have ▁somehow ▁been ▁involved ▁in ▁the ▁cargo ▁catch