geneva syrian refugees could seek reach europe droves aid program sustain five neighbor countries host bulk unite nations say tuesday u.n. high commissioner refugees unhcr give detail 4.4 billion appeal support 5.3 million syrian refugees surround countries well host communities turkey lebanon iraq jordan egypt take agency receive 53 percent 4.63 billion appeal 2017 need international support amin awad director unhcr middle east north africa bureau tell news brief list many reason include vast number refugees region geopolitical status region risk population 5.3 million people bring area small region already volatile assistance experience 2015 want repeat say lack fund lead acute shortage service year one million refugees flee europe add half syrians unhcr figure show eu-turkey deal largely halt flow unhcr fund shortfall lead fresh cutbacks vital program provide food health care education shelter syrian refugees awad say mean able provide stoves able deliver kerosene able deliver enough thermal blanket able winterise tent able drain water snow camp able engineer work insulate build people sit cold open build say turkey currently host 3.3 million syrian refugees large number follow lebanon one million big donors real donors provide space international protection awad say material assistance leave donors international community ... come prepare consequences say awad ask countries region close border syrian refugees reply border manage instance close host countries cite concern security economic crises xenophobia syrians continue arrive say lebanon still accept vulnerable case medical case turkey awad say case refoulement return refugees place could face war persecution violation law say see expulsion see people send back unhcr spokesman adrian edwards decline provide specifics syrian refugees expel u.n. warn new syrian refugee wave europe aid dry