dubai saudi arabia host call expand conference syrian opposition month aim unify position ahead unite nations-backed peace talk state news agency spa report monday saudi arabia back group opposition figure call high negotiations committee hnc lead riyad hijab former syrian prime minister assad hnc represent syrian opposition previous geneva talk number political opposition group figure back countries include russia egypt also exist clear spa statement syrian opposition members would participate conference kingdom lead backer syrian rebel support international agreement future syria maintain president bashar al-assad role transition bring war end assad whose syrian army force back saudi arch-foes iran hezbollah make major gain opposition force islamic state militants base policy kingdom support efforts establish peace counter terrorism response request syrian opposition expand meet hold city riyadh spa say talk set november 22-24 aim bring party platforms close together unite negotiate delegation resume direct negotiations geneva auspices u.n. several round u.n. talk geneva damascus government opposition make little progress saudi arabia host `` expand `` syrian opposition conference