JCPOA Vienna talks are into their third week, but as talks failed to conclude, parties agreed to forming a third expert working group, to focus on steps to restore the nuclear deal or JCPOA.
Perhaps three is the charm, that will align Irans expectations and Americas intentions to achieve that goal.
Iran sees three steps to reviving the deal, the first of which is sanction-lifting by the US. But the US categorizes three sets of sanctions, not all of which are meant to be lifted.