SEOUL (AP) -- North Korea is threatening to continue launching strikes against South Korea if it violates their disputed sea border ``even 0.001 millimeter.''
North Korea's supreme military command said Tuesday that it would ``launch merciless military retaliatory strikes.''
The warning was carried by North Korea's official Korean Central News Agency.
The comments followed North Korea's bombardment of a South Korean island near their disputed western border Tuesday. South Korean officials said the barrage set buildings ablaze and killed at least one marine after the North warned the South to halt military drills in the area.