riyadh/amman syria main opposition group select new chief negotiator friday ahead new round u.n.-backed peace negotiations damascus government set kick next week nasr hariri say opposition go geneva nov. 28 hold direct talk ready discuss everything negotiate table announcement come summit riyadh day opposition stick demand president bashar al-assad play role interim period despite speculation could soften stance assad battlefield strength opposition group meet seek unify position ahead geneva two years russian military intervention help assad government reverse major territorial losses incur since begin war hariri replace hardline riyad hijab lead high negotiations committee previous negotiations abruptly quit week hint hnc face pressure make concessions favor assad u.n. peace talk mediator staffan de mistura prepare next round geneva talk meet friday russian foreign minister sergey lavrov say moscow work riyadh unify syrian opposition many years western arab countries back opposition demand assad leave office since russia join war behalf assad government become increasingly clear assad opponents path victory battlefield russian president vladimir putin call congress syrian government opposition draw framework future structure syrian state adopt new constitution hold elections u.n. supervision also say political settlement syria would finalise within geneva peace talk process oversee unite nations opposition long suspicious parallel diplomatic track push russia propose sochi congress include talk kazakhstan insist political dialogue take place geneva hariri say sochi serve political process call international community include russia concentrate efforts serve political process accord international resolutions geneva un auspices alaa arafat represent moscow platform political group though say would attend sochi urge others go reflect linger tensions within diverse opposition saudi foreign minister adel jubeir open summit wednesday pledge country support unify opposition praise creation one negotiate team represent everyone ask change position towards assad future tell reporters riyadh continue support settlement base u.n.-backed process geneva support position syrian opposition begin continue say syria six-year-old civil war kill hundreds thousands people force millions flee bad refugee crisis since world war two syrian opposition pick chief negotiator ahead new geneva talk