EDITORS' NOTE: THIS EDIT CONTAINS CONVERTED 4:3 MATERIALS AND EDITED VERSION OF KRT

South Korean protesters burned a North Korean flag and a portrait of North Korean leader Kim Jong-un on Wednesday (April 25) amid heightened tensions on the peninsula.

About thirty elderly protesters gathered in front of the country's defense ministry for the anti-North rally denouncing the communist neighbour's recent threats, which was interrupted by police.

In North Korea, a campaign against South Korean President Lee Myung-bak over his recent remarks criticizing its failed rocket launch has been played up by the state media.

The North's state-television KRT broadcasted a military training exercise on Tuesday (April 24), showing tanks destroying targets and an effigy of Lee.

KRT also showed an anti-Lee rally outside a textile factory in Pyongyang where female workers stabbed effigies of Lee with a knife.

North and South Korea are still technically at war since the 1950-53 Korean War ended in a truce without a peace treaty.