london iranian authorities sentence member iran nuclear negotiate team five years jail tasnim news agency report wednesday although give detail case iran reach nuclear deal unite state five major power 2015 lead lift international sanction iran return curb nuclear program potential detente west alarm iranian hardliners see flood european trade investment delegations arrive tehran discuss possible deal accord iran experts report last year iranian media say nuclear negotiator dual nationality arrest accuse provide sensitive economic information iran enemies may judiciary spokesman gholamhossein mohseni ejei say member negotiate team face espionage charge sentence prison term add could provide detail since verdict could appeal case review appeal court five-year jail sentence uphold tasnim quote inform source say wednesday name person tasnim report july 2016 member negotiate team charge bank affairs talk arrest agency semi-official media name abdolrasul dori esfahani iranian-canadian nationality possibly hold passports security officials arrest several businessmen include iranians hold joint american european canadian citizenship part crackdown western infiltration iran islamic revolutionary guard corps october 2015 detain siamak namazi businessman mid-40s dual u.s.-iranian citizenship visit family tehran irgc february arrest 80-year-old father baquer namazi former iranian provincial governor former unicef official also dual citizenship men jail 2016 10 years spy cooperate u.s. government iran sentence member nuclear negotiate team five years jail tasnim