Amid growing tensions, North Korea issues yet another threat against the South, this time warning it is "ready to fire" warheads at enemy strongholds and turn them into a "sea of flames."<br/> <br />Japanese media reported on Thursday that a North Korean missile launcher was moved into firing position, with rockets facing skyward.<br/> <br />South Korean officials also believe the North has moved five medium-range missiles to its east coast and may engage in test launches in another attempted display of military strength.<br/> <br />The latest provocation comes as South Korea's Unification Minister urged the North to stop issuing threats.<br/> <br />(SOUNDBITE) (Korean) SOUTH KOREAN UNIFICATION MINISTER RYOO KIHL-JAE SAYING:<br/> <br />"The government expresses regret that North Korea continues to threaten to provoke us and the international community. We strongly urge North Korea not to continue creating a crisis on the peninsula."<br/> <br />Relations chilled in February following a missile test by the North, and
