Others caution that the latest shift is likely part of a familiar playbook for North Korea. “Given the political landscape, North Korea is looking for new and novel ways to ramp up tensions,” said Jean H. Lee, a visiting fellow at the East-West Center, a Honolulu-based think tank. “Calling South Korea Enemy No. 1 is a tactic Kim Jong Un may hope will spark some anxiety in the region and unease among South Koreans.”