unite nations russia reject tuesday report international inquiry blame syrian government deadly toxic gas attack cast doubt whether u.n. security council agree extend investigation mandate expire next week russia veto initial u.s. bid renew joint inquiry u.n. organization prohibition chemical weapons opcw oct. 24 say want wait release investigation report two days late since propose rival draft resolution deputy russian u.n. ambassador vladimir safronkov say tuesday aim enhance effectiveness inquiry correct errors systemic problems without comprehensive change become tool settle account syrian authorities safronkov tell 15-member security council tuesday meet report u.n./opcw joint investigative mechanism jim report find syrian government responsible april attack use ban nerve agent sarin opposition-held town khan sheikhoun kill dozens people syrian government deny use chemical weapons chemical weapons attack prompt u.s. missile strike days late syrian air base russia try shoot messenger cover crimes syrian regime deputy british u.n. ambassador jonathan allen tell security council u.s. ambassador unite nations nikki haley say could high priority security council renew jim mandate diplomats say unite state amend draft resolution bid win russian support anyone prevent us achieve goal aid abet use chemical weapons haley say help ensure women children die women children die one cruel painful ways possible resolution must get nine vote favor veto russia china unite state britain france pass allen tell reporters russian draft resolution little support council realistic prospect success jim previously find syrian government force responsible three chlorine gas attack 2014 2015 islamic state militants use mustard gas syria agree destroy chemical weapons 2013 deal broke russia unite state u.n. russia slam inquiry toxic gas attack syria