"Diplomacy between the two Koreas last year paved the way for the demining. But since then, only a few hundred of the roughly 1 million landmines scattered around South Korea have been removed. The U.S. and South Korean governments have not signed the Ottawa Treaty banning the use of landmines, citing the danger of a North Korean attack. But they should, argues Dr. Cho Jai-kook, head of the Korea Campaign to Ban Landmines. He estimates that 80% of them were planted outside the DMZ after the war to guard U.S. military installations, which have long since been removed."