geneva president bashar al-assad family role future syria u.s. secretary state rex tillerson say thursday ahead peace talk aim political transition schedule resume next month tillerson say trump administration back geneva peace talk way end six-year-old war move political transition elections speak hold talk u.n. special envoy syria staffan de mistura announce stall peace talk syrian government still-to-be-united opposition would resume geneva nov. 28 unite state want whole unify syria role bashar al-assad government tillerson tell reporters swiss city end week-long trip take saudi arabia qatar pakistan india view say many time well believe future assad regime assad family reign assad family come end issue bring about trump administration come office take view prerequisite assad go transitional process start add support russian air power iran-backed militias assad appear militarily unassailable last month assad ally hezbollah declare victory syrian war force push islamic state back large swathe eastern syria recent months past year take numerous pocket rebel-held territory around aleppo homs damascus read assad stay long russians iranians alternative western diplomat tell reuters date departure depend russians anyone else find someone good may go ceasefire deal broke russia turkey iran unite state remain rebel-held areas western syria free manpower assad ally tillerson call discussions de mistura fruitful say unite state continue efforts de-escalate violence syria say reason assad force succeed turn tide war islamic state militants air support receive russia tillerson say iran assad main ally see make difference defeat islamic state syria see syria triumph iran see iran hanger-on think iran give credit defeat isis islamic state syria rather think take advantage situation role assad syria 's future tillerson