“The weapons of choice in (today’s) new conflicts are not big-ticket items like long-range missiles, tanks, and fighter planes, but small and frighteningly accessible weapons ranging from handguns, carbines, and assault rifles on up to machine guns, rocket-propelled grenades, and shoulder-fired missiles,” explained William Hartung more than a decade ago in an article entitled The New Business of War. “Because they are cheap, accessible, durable, and lightweight, small arms have been a primary factor in the transformation of warfare from a series of relatively well- defined battles between ‘two opposing forces wearing uniforms’ to a much more volatile, anarchic form of violence,” says Hartung, now director of the Arms and Security Project at the Center for International Policy in Washington DC. “More often than not, today’s wars are multisided affairs in which militias, gangs, and self-anointed “rebels” engage in campaigns of calculated terror, civilian targets are fair game, and the...