Daniel Horner became editor of Arms Control Today in April 2009. Prior to joining ACA, Dan was senior editor with the Platts Nuclear Group, which publishes Nucleonics Week, NuclearFuel, and Inside NRC. At Platts, Dan wrote and edited articles on national and international issues dealing with nuclear power and proliferation. While with Platts he received an award for Editorial Excellence in Newsletter Journalism from the Newsletter & Electronic Publishers Foundation. Before working with Platts, he was a managing editor with Exchange/Monitor Publications, and deputy director of the Nuclear Control Institute, where he helped develop domestic and international strategies for the institute's efforts to stop the spread of nuclear weapons. Dan holds a master's degree from Tufts University's Fletcher School of Law and Diplomacy and a bachelor's degree from Yale University.