unite nations french president emmanuel macron say tuesday want play mediation role iran unite state ensure tehran involve find political solution syria resolve syrian problem iran around table efficient response iran today among power influence grind macron tell news conference paris try set international contact group syria revive stall peace talk geneva unite state adopt staunchly anti-iran stance since president donald trump take power complicate peace talk major power note u.s. refusal today want contact group advance unite nations france serve intermediaries iran macron say france 's macron seek play mediation role iran u.s