U.S. envoys says North Korea talks no instant fix from Reuters: Politics BEIJING (Reuters) - Progress in fresh talks with Pyongyang could take "weeks and months," the United States' envoy for the North Korean nuclear dispute said Friday, despite what he called productive discussions over the long-running standoff. feeds.reuters.com/~r/Reuters/PoliticsNews/~3/539cVoWW4_s/us-usa-korea-north-idUSTRE81N06U20120224