Top diplomats from the United States, five other world powers, and Iran are racing against the clock to seal a long-sought, long-term comprehensive deal that guards against a nuclear-armed Iran, helps avoid a future military confrontation over its nuclear program, and leads to sanctions relief. This special newsletter compiled by the research staff of the Arms Control Association is designed to provide occasional updates from various sources on the talks, as well as information to help provide journalists, policy makers, and the public with a better understanding of the key issues and options...