At Least Someone May See the Game.

N.Korea seen buying time on nuclear talks-analysts - Boston.com - Asia - News
Maybe some know the history of the game.

SEOUL (Reuters) - North Korea's signal to Washington that it is willing to return to nuclear talks could be a tactic to buy time and block Washington from referring the issue to the United Nations, analysts said on Wednesday.
[...]
"This is probably a diplomatic tactic to stall while hanging on to its nuclear programs," said Lee Dong-bok, senior associate with the CSIS think-tank.
"North Korea basically is not going to give up its nuclear programs, so it will come to the talks with demands not acceptable to the United States," he said.