North Korea warned South Korea of a possible naval clash Thursday, accusing Seoul of sending warships into its waters around their disputed western sea border, AP reported. The South's «reckless military provocations» have created «such a serious situation that a naval clash may break out between the two sides in these waters,» the North's navy said in a statement carried by the country's official Korean Central News Agency. North Korea has often issued similar warnings before, as it does not recognize the western sea border. The North claims that the United Nations unilaterally drew the line at the end of the 1950-53 Korean War, and that it should be redrawn further south. The dispute led to two bloody naval skirmishes in 1999 and in 2002. -- SPA