Jang Sung - taek was the chairman of the top military body and married to Kim 's daughter . North Korea state media say Jang was convicted of treason and executed . He was arrested at a special meeting of the government and a lengthy list of suspects published . North Korea stability fears after execution . Klingner : Likely the accusation of treason was to undermine Jang 's reputation .
Jang Sung - taek was the chairman of the top military body and married to Kim 's daughter . North Korea state media say Jang was convicted of treason and executed . He was arrested at a special meeting of the government and a lengthy list of suspects published . Klingner : Likely the accusation of treason was to undermine Jang 's reputation .