This could be evidence of first leadership purge under new leader , he says . Pyongyang appointed a new field marshal a day after removing its army chief . State media does n't say whether Hyon Yong Chol replaces the army chief . The coup is probably the work of Kim Jong Un 's supporters , an expert says .
Removal could be evidence of first leadership purge under new leader , analyst says . Pyongyang chooses a new vice marshal a day after removing its army chief . State media does n't say whether Hyon Yong Chol replaces the army chief . The promotion is probably the work of Kim Jong Un 's uncle , an expert says .