South Korean drill
, April 17, 2013
South Korean soldiers walk through smoke as they take part in an anti-terror and security drill at the Integrated Government Complex in Sejong, south of Seoul, on April 17. North Korea issued new threats against South Korea on Tuesday, vowing "sledge-hammer blows" of retaliation if South Korea did not apologise for anti-North Korean protests the previous day when the North was celebrating the birth of its founding leader. Reuters/Kim Hong-Ji