The tiny bomblets the de-miners must contend with are the worst. It takes a perverse ingenuity to design a device that spring from a mother pod: an elongated canister that opens, in midair, after being dropped from an airplane. Each pod realeased 600 individual bomblets, each smaller than a baseball, that fly out in all directions, blanketing an area the size of three football fields. Each bomblet contains its own explosive charge that will send shrapnel flying into anything in their path. As the duds rust away in the ground, some become inert, while other become unstable. You never know which. Photo by VnExpress/Xavier Bourgois