washington u.s. secretary state john kerry meet iranian foreign minister mohammad javad zarif new york tuesday discuss implementation iran nuclear deal ways tehran use influence end syria civil war u.s. officials say monday kerry expect raise tehran concern difficulties access global financial system despite lift u.s. sanction nuclear deal iran six world power clinch nuclear agreement july 2015 allow ease sanction impose unite state european union unite nations return tehran curb nuclear program tehran call unite state remove obstacles bank sector businesses feel comfortable invest iran without penalties current u.s. policy bar foreign bank clear dollar-based transactions iran u.s. bank u.s. officials say obama administration consider ways non-u.s. company use dollar business transactions iran secretary mindful topic come much foreign minister zarif mind state department spokesman john kirby tell news brief secretary ready talk it kerry press iran use influence syrian government end syria war kirby say peace talk geneva halt opposition accuse government force break ceasefire bid recapture northern city aleppo secretary intend raise ... ways iran get helpful go forward political process say kirby add want use influence constructive manner towards political solution u.s. say kerry meet iran foreign minister tuesday