istanbul turkey seize assets turkish-iranian gold trader key witness trial turkish bank executive unite state violations iran sanction state-run anadolu news agency say friday turkish prime minister binali yildirim say friday hop gold trader reza zarrab would turn back mistake cooperate u.s. prosecutors reiterate ankara view criminal trial new york aim put pressure turkey economy istanbul prosecutor office decide seize assets zarrab acquaintances part investigation anadolu say prosecutor office immediately available comment turkey seize assets gold trader testify u.s. court anadolu