VIENNA, Austria — Buoyed by their surprising success in achieving a treaty to ban land mines, a range of nongovernmental groups from academic institutes to human rights and aid agencies are now girding for a campaign against assault rifles and other light weapons, which inflame ethnic and nationalist wars around the world. The campaigners do not have as their goal a gun free world, which they say would be unrealistic. Rather they seek to curb the brisk, and largely... (GunPolicy.org)