In terms of whether we have reached our ultimate destination, we have not yet succeeded there. Diplomacy requires a great deal of patience.
I would just highlight, as an example, that the efforts that resulted in the nuclear agreement with Iran took more than a decade of painstaking diplomatic negotiation to try to change the threat perception that Iran from the west and make it understand that it could achieve its goals through a diplomatic solution and not through armament.
I think we're engaged in a similar process with the DPRK. We have not yet seen the players return to the negotiating table. We hope that comes sometime soon.