unite nations international investigation blame chemical weapons attack syria end friday russia block third time month attempt unite nations renew inquiry moscow slam flaw past two years joint u.n. organization prohibition chemical weapons opcw inquiry find syrian government use nerve agent sarin april attack also several time use chlorine weapon blame islamic state militants use mustard gas russia veto friday japanese-drafted u.n. security council resolution extend inquiry one month eleventh-hour bid buy time negotiations russia block u.s.-drafted resolutions thursday oct. 24 renew investigation council create 2015. syrian ally russia cast 11 veto possible security council action syria since country civil war begin 2011. japanese draft receive 12 vote favor friday china abstain bolivia join russia vote friday vote council move closed-door discussions request sweden u.n. ambassador olof skoog ensure absolutely convince exhaust every avenue every effort try renew investigation brief discussion italian u.n. ambassador sebastiano cardi council president november tell reporters council continue work come hours days constructively find common position russian u.n. ambassador vassily nebenzia tell council early friday inquiry could extend fundamental flaw work fix say past two year investigators rubber-stamped baseless accusations syria council vote rival russian-drafted resolution thursday renew inquiry fail garner four vote favor resolution need nine vote favor veto unite state france russia britain china adopt russia waste time u.s. ambassador unite nations nikki haley tell council friday russia action today recent weeks design delay distract ultimately defeat effort secure accountability chemical weapons attack syria haley say russia agree creation inquiry two years ago consistently question work conclusions april sarin attack khan sheikhoun kill dozens people prompt unite state launch missiles syrian air base haley warn thursday must despite public deadlock war word unite state russia unite nations white house spokeswoman sarah sanders say thursday president donald trump believe could work russian president vladimir putin issue like syria syria agree destroy chemical weapons 2013 deal broke russia unite state syria toxic gas inquiry end russia block u.n. renewal