South Korea's military today began a major live-fire exercise amid high tension. The exercise started following North Korea's deadly bombardment of Yeonpyeong island last month which killed two civilians and two marines. The Joint Chiefs of Staff said the firing exercises by warships and land artillery units had started in 29 locations, including off one of five frontline islands near the disputed Yellow Sea border with the North Korea. Pyongyang has described the five-day drill as an attempt to trigger a war.