Sth Korea diverts flights away from Nth Korea

Two airlines in South Korea are to re-route flights after North Korea said it could no longer guarantee their safety. Korean Air and Asiana Airlines, have both re-routed their flights. The threat follows North Korea's warnings that a US-South Korean military exercise, due to take place next week, could trigger a military clash. North Korea has previously described such exercises as provocative but tensions between the two Koreas are now high. About 30 international flights a day usually pass through North Korean airspace to and from the South. South Korea has called on the communist state to immediately withdraw its threat. "