North Korea vows to develop chemical sector for self-sufficient economy

North Korean leader Kim Jong Un has pledged to further develop a "self-sufficient" economy by promoting the chemical industry in a bid to reduce dependence on crude oil, state-run media reported Monday.Kim made the pledge during a meeting of the Political Bureau of the Central Committee of the Workers' Party that took place over two days through Sunday, the official Korean Central News Agency said.Related coverage:Ex-abductees mourn death of symbolic North Korea victim's father YokotaN. Korea vows to abolish joint liaison office with South: KCNAREAD FULL ARTICLE