On 3 December 2008, Norway, as the sponsor of the move to outlaw cluster bombs, was the first of over 100 nations to begin signing an international convention to ban their production. Used principally as an anti-personnel weapon, there are several types of cluster bomb, but the principle is the fundamentally the same. It is a bomb that carries a significant load of smaller bomblets, about the size of a tin can. These contain hundreds of metal pieces, which cause deadly damage up to 25 metres. International opinion finds these weapons odious not only because they target personnel, but also because not all the bomblets explode. They can lie dormant for a long time after delivery, until moved or disturbed. Hence they have been responsible for the death of many innocent civilians and children. The charity Handicap International maintains that 98% of cluster bomb casualties are civilians and 27% children. The US, Russia, China, India, Pakistan and Israel have not yet signed the treaty.