North's threat over democracy leaflets

North Korea will fire across a land border with South Korea if Seoul continues its anti-North psychological campaign, the North said yesterday, ahead of a joint military drill between the US and South Korea.

South Korea has been dropping leaflets into the North about the protests in Egypt and Libya, in a bid to encourage North Koreans to think about change.

The official North Korea news agency called the "on-going psychological warfare" by the South "a treacherous deed" and said the North was prepared to attack in "self-defence".