Recalling the fact that the ROK puppets let various kinds of battleships intrude into the waters of the DPRK to seriously encroach upon its sovereignty under the pretext of control of fishing boats and ships of a third country and maritime patrol while making desperate efforts to preserve the “northern limit line”, a ghost one without any ground in the light of international law or legal justification, he stressed the need for the DPRK to thoroughly defend the maritime sovereignty by force of arms and actions, not by any rhetoric, statement and public notice.