Cluster bombs are literally hell from above. Anyone who has seen the effects of cluster carpet bombing on innocent civilians - in Afghanistan, Iraq, Lebanon, and in the 60s and 70s in Laos, Cambodia and Vietnam - cannot help but be horrified. A cluster bomb is a cannister that opens in midair and ejects hundreds of "bomb-lets" across an area of more or less two football fields. These bomb-lets are little metal balls - as powerful as a hand grenade. When these bomb-lets explode, there’s a rain of jagged shrapnel.