UNITED NATIONS — The United Nations concluded an open-ended working group for an international Arms Trade Treaty (ATT) Thursday, part of a lengthy and politically contentious process to nail down a basic framework for curbing deadly illegal weapons sales. "An open-ended working group in the U.N. is where all states can come to a meeting, it's an open invitation," Amnesty International spokesperson Brian Wood explained to IPS. "They are trying to get a better idea of... (GunPolicy.org)