North Korea on Thursday used a research institute apparently renamed under its "two hostile states" policy to denounce growing military cooperation between South Korea and Japan, in the latest sign that Pyongyang is institutionalizing its abandonment of inter-Korean reconciliation. The Korean Central News Agency on Thursday carried a commentary by Kang Chol-su, section chief of North Korea's Institute of Enemy State Studies. In it, Kang condemns Seoul and Tokyo's expanding security ties as "a fo