geneva peace stability must restore myanmar northern rakhine state rohingyas return bangladesh international standards voluntary repatriation unite nations refugee agency unhcr say friday 20,000 rohingya flee myanmar bangladesh november least 270 far december bring total since violence erupt august 25 646,000 accord unhcr international organization migration iom two countries sign agreement voluntary repatriation refer establish joint work group within three weeks nov. 23 sign unhcr party pact involve bilateral discussions critical return rush premature unhcr spokesman adrian edwards tell brief people move back condition rakhine state simply sustainable htin lynn myanmar ambassador u.n. geneva say tuesday government hop return would begin within two months address human right council top u.n. right official say myanmar security force may guilty genocide rohingya muslim minority unhcr formally invite join work group although deputy high commissioner refugees kelly clements hold talk bangladesh edwards say add discussions still preliminary stage could say whether unhcr talk myanmar authorities role hop agency would part joint work group edwards ask whether two-month time premature say return timeline course something go look closely ... want see return happen either involuntarily precipitously condition ready bangladesh host total 858,000 rohingya include previous wave iom figure show ... cycle displacement rakhine state many decades people marginalize violence people flee people return edwards say cycle break mean find way ensure last solution people wfp spokeswoman bettina luescher say distribute food 32,000 people northern rakhine november everybody agree situation dire grind u.n. agencies need access violence stop people live safety want live say u.n. warn hasty return rohingya myanmar