SEOUL, SOUTH KOREA — North Korean leader Kim Jong Un held a key policy-setting meeting of the country’s ruling party last week ahead of the new year, state media KCNA reported on Sunday. The meeting of party and government officials decided that North Korea would launch the “toughest” strategy to counteract the United States for its security and national interests, the report said, without elaborating. The alliance between South Korea, the U.S. and Japan has expanded to a “nuclear military bloc” and South Korea has become an “anti-communist outpost” for the U.S., the KCNA report added. “This reality clearly shows