seoul north korea goal reach equilibrium military force unite state state agency say saturday day leader kim jong un order test medium-to-long range hwasong-12 missile fly japan pacific ocean final goal establish equilibrium real force u.s. make u.s. rulers dare talk military option dprk kim cite say report pyongyang fire second missile japan less month friday prompt unite state say military options deal north signal patience diplomacy wear thin north korea say goal 'equilibrium u.s. test hwasong-12 missile kcna