UNITED NATIONS — Secretary of State Hillary Rodham Clinton announced late Wednesday that the United States is prepared to begin negotiations on a global treaty regulating trade in conventional weapons but said Washington would sign the accord only if all other states agreed. The move marks a shift in policy from the Bush administration, which staunchly opposed U.N. negotiations to regulate the $55 billion-a-year arms trade. The Obama administration hopes it can use... (GunPolicy.org)