kiev ukrainian officials security monitor kiev foreign backers warn wednesday moscow decision withdraw ukrainian-russian ceasefire control group could worsen fight eastern ukraine monday russian foreign ministry say recall officer serve joint centre control coordination jccc ukraine accuse ukrainian side obstruct work limit access front line ukrainian defence minister stepan poltorak security chief olekshandr turchynov say decision couple recent surge fight eastern donbass region suggest russia switch offensive strategy rule withdraw officer order start step military provocations also military operations turchynov say strengthen position front ukrainian arm force currently prepare change situation poltorak tell journalists russia-backed separatist insurgency erupt 2014 bloodshed continue despite ceasefire mean end conflict 10,000 people kill casualties report near-daily basis spokesman organisation security co-operation europe work jccc monitor much-violated minsk peace agreement say concern step might lead deterioration security situation region affect smm osce special monitor mission civilian population fight ukrainian troop separatists climb bad level months osce say week shell frontline village wound civilians destroy damage dozens home russia deny accusations ukraine nato support rebel troop weapons u.s. envoy peace talk kurt volker say moscow answerable violence russia withdraw officer jccc ceasefire implementation tool right massive escalation ceasefire violations ukraine suffer bad fight since february 2017. decision peace lie russia volker tweet tuesday germany france spearhead international efforts resolve conflict express concern germany foreign ministry spokesman say could severe consequences civilians conflict zone call russian authorities reconsider decision hope ukrainian authorities guarantee access ukrainian territory russian representatives joint center jccc say alexandre giorgini deputy spokesman french foreign ministry create 2014 jccc make ukrainian russian officer mean work together ensure safety osce monitor help implement minsk ceasefire ukraine ally fear escalation russia exit ceasefire group