Choi choon-heum , a senior research fellow at the korea institute of national unification , said pyongyang had calibrated its attack to avoid a conflagration .
Less than a year ago , ms. choi went to work for one of south korea 's largest insurance companies .
不到一年之前,蔡女士进入韩国最大的一家保险公司工作。
But mr choi said it was " unthinkable for kim kyong-hui to covet kim jong-eun 's throne " .
但崔春钦说,“难以想象金敬姬会觊觎金正银的地位”。
Several south korean analysts have suggested that vice-marshal ri may have lost a power struggle with mr choi , in which mr kim sided with the party official .