TheIrannuclearissuehasbecomethe'thirdfactor'inSino-U.S.relations.ProblemsbeganwhentheU.S.imposedsanctionsagainstChinesecompanies,andthisbecameamajorissueaffectingSino-U.S.relationship.ChinaandtheU.S.havedifferentagendasindealingtheIrannuclearissue.However,theyalsosharesomecommonground.DifferentscenariosregardingthelrannuclearissueaffectSino-U.S.relationsindifferentways.
