US docks: Imposed sanctions on N. Korea, Russia in past...won't hesitate to do so in future: US State Dept
Matthew Miller also emphasised that the close ties between Pyongyang and Moscow have "not exactly been productive" for the world's security. He said, "Obviously, there has been a close relationship between those two countries for a while...when that's not exactly been productive to increasing the security of the world, I wouldn't expect that to change as a result of this meeting."