Following a report that North Korea was placing its rocket units on standby to attack U.S. military bases, South Korea's Yonhap news agency announced that South Korea had detected increased activity at the north's missile sites.
Kim signed the order at a meeting of top generals and said the time had come to "settle accounts" with the U.S., the Korean Central News Agency (KCNA) reported.
Yonhap quoted a military source as saying, "Sharply increased movements of vehicles and soldiers have been detected recently at North Korea's mid- and long-range missile sites."
On Thursday, the U.S. flew two stealth bombers on practice runs over South Korea, showing force after several threats by North Korea. Swiftly thereafter, KCNA reported that Kim had "finally signed the plan on technical preparations of strategic rockets of the KPA, ordering them to be standby for fire so that they may strike any time the U.S. mainland, its military bases in the operational theaters in the Pacific, including Hawaii and Guam, and those in South Korea."