geneva unite nations must take responsibility investigate right violations yemen civil war country government job global body human right office say report publish tuesday office challenge u.n. human right council meet month agree look atrocities commit call entirely man-made catastrophe 47-country council shy away task two years leave job yemen national commission report president abd-rabbu mansour hadi back saudi-led coalition one combatants ... join ask members human right council take responsibility membership body seriously office head middle east north africa mohammad ali alnsour tell news conference yemen mire war kill least 10,000 people past two-and-a-half years accord u.n. figure widespread hunger internal displacement unprecedented cholera epidemic lead aid agencies describe one world bad humanitarian disasters alnsour say third time council ask set investigation would really put pressure conflict party adhere rule obligations humanitarian law say u.n. report say yemen national commission detrimentally affect political constraints perceive partiality national commission limit access prevent execute mandate comprehensively say addition ... appear lack instrument mandate would enable channel find credible accountability mechanism head u.n. world food programme tell reuters monday saudi arabia fund entire humanitarian aid budget yemen stop war unusually direct criticism major u.n. donor u.n. report say least 5,144 civilians document kill march 2015 aug. 30 2017 saudi-led coalition responsible half air strike lead cause civilian child casualties report say also blame coalition stoke food crisis leave 7.3 million brink famine n't leave saudi-backed commission probe yemen abuse u.n. say