geneva syrian opposition delegation peace talk geneva aim removal president bashar al-assad plan engage negotiators serious direct talk head opposition delegation nasr hariri say monday hariri call major power especially russia pressure assad government real negotiations political transition follow new constitution free elections line u.n. roadmap end six-year war stress political transition achieve oust assad begin goal hariri tell news conference arrive geneva round u.n.-led talk schedule start tuesday goal negotiation departure bashar al-assad begin transition say breakthrough u.n.-backed syria peace talk geneva week seem hardly likely seven fail early round assad push total military victory opponents stick demand leave power previous diplomatic initiatives swiftly collapse opposition demand assad must go refusal syrian government delegation lead u.n. ambassador chief negotiator bashar al-ja afari fail arrive geneva monday due clear whether delegation would arrive tuesday u.n. mediator staffan de mistura due meet opposition high hop regime use delay tactics obstruct progress toward political solution time opposition come one unify delegation hariri say russia .. .is entity capable bring regime table negotiations many years western arab countries back opposition demand assad leave office however since russia join war behalf assad government two years ago become increasingly clear assad opponents path victory battlefield syrian civil war seventh year kill hundreds thousands people cause world bad refugee crisis drive 11 million home syrian government continue bomb sieges areas include 400,000 people eastern ghouta rebel-held damascus suburb hariri say monday hundreds thousands siege grave need humanitarian aid hundreds thousands detainees verge death suffer live death every day say syrian opposition aim assad 's removal geneva talk