By Soo-hyang Choi SEOUL (Reuters) -North Korea leader Kim Jong Un has ordered his country’s military, munitions industry and nuclear weapons sector to accelerate war preparations to counter what he called unprecedented confrontational moves by the U.S., state media said on Thursday. Speaking on the policy directions for the new year at a key meeting of the country’s ruling party on Wednesday, Kim also said Pyongyang would expand strategic cooperation with “anti-imperialist independent” countries, news agency KCNA reported. North Korea has been expanding ties with Russia, among others, as Washi…