Nothing came of New York meeting days before North Korea unleashed threats . Comment: The Obama administration called for Pyongyang to avoid provocative actions . `` New York channel '' set up for U.S. , North Korea to exchange information , messages .
Nothing came of New York meeting days before North Korea unleashed threats . Source says meeting part of regular back channel exchanges . The Obama administration called for Pyongyang to avoid provocative actions . `` New York channel '' set up for U.S. , North Korea to exchange information , messages .