The Democratic People’s Republic of Korea (DPRK) has cautioned of making preemptive strikes against the United States military installation of Guam in the Pacific anytime, after two U. Air Force B-1B Lancer bombers flown on Tuesday to South Korea, practicing mock nuclear bomb droppings on DPRK strategic targets, officials from Korean Central News Agency said on Wednesday. The KCNA cited a spokesman for the Strategic Force of the Korean People’s Army (KPA) as saying late Tuesday that DPRK top leader Kim Jong Un has ordered for an examination of a powerful and effective action plan for containing the U.