The world's longest-running war just heated up again.
Smoke rises from South Korean Yeonpyeong Island after being hit by dozens of artillery shells fired by North Korea November 23, 2010 in this picture taken by a South Korean tourist. North Korea on Tuesday fired dozens of artillery shells at a South Korean island, in one of the heaviest bombardments on the South since the Korean War ended in 1953. REUTERS/Yonhap (SOUTH KOREA - Tags: POLITICS MILITARY DISASTER IMAGES OF THE DAY) NO SALES. NO ARCHIVES. FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS. SOUTH KOREA OUT. NO COMMERCIAL OR EDITORIAL SALES IN SOUTH KOREA