SEOUL, South Korea, Rajab 27, 1432, Jun 29, 2011, SPA - North Korea's military is vowing to retaliate for signs posted at South Korean army units that the North says slanders its leader Kim Jong Il. The Korean People's Army issued the warning Wednesday. It says unspecified military measures will continue «mercilessly» until South Korea apologizes and removes the signs. South Korea's Defense Ministry confirmed Wednesday that some of its front-line army units have set up signs criticizing North Korea and the Kim dynasty in the wake of two deadly attacks blamed on North Korea last year, according to a report of the Associated Press. --SPA 12:22 LOCAL TIME 09:22 GMT www.spa.gov.sa/906615