`` I think the Chinese saw him as a sober , adult supervisor '' of the untested young leader , he said . The message : `` Do n't mess with Kim Jong Un , '' says North Korea expert Mike Chinoy . `` This is a stunning development , '' says North Korea expert . ` It's the first time in decades that Pyongyang has publicly acknowledged its nuclear program and said it will not use such weapons against South Korea.
The message : `` Do n't mess with Kim Jong Un , '' says North Korea expert Mike Chinoy . `` This is a stunning development , '' says North Korea expert . ` It's the first time in decades that Pyongyang has publicly acknowledged its nuclear program and said it will not use such weapons against South Korea.