North Koreans work to unload anti-viral medicine offered from the South, in Kaesong, North Korea, December 18, 2009. North Korea on Friday accepted a batch of medicine from the South to combat a swine flu outbreak, the first shipment of humanitarian aid from its neighbour in about two years. REUTERS/Unification Ministry of South Korea/Handout (NORTH KOREA - Tags: HEALTH MILITARY POLITICS) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS