Army soldiers remove a barricade for trucks carrying sacks of flour to North Korea at a checkpoint in front of the Unification Bridge near the demilitarized zone separating the two Koreas in Paju, about 55 km (34 miles) north of Seoul, July 26, 2011. South Korean civic groups sent 300 tonnes of flour aid on Tuesday to help starving North Koreans in Sariwon city, North Hwanghae Province, North Korea. The groups also demanded the South Korean government to expand humanitarian food aid to the North. REUTERS/Jo Yong-Hak (SOUTH KOREA - Tags: MILITARY POLITICS SOCIETY)