"The Kremlin responds positively to the latest comments of U.S. administration members on the future of U.S.-Russia relations," said the spokesperson Natalia Timakova.
Russian President Dmitry Medvedev "is prepared for the most thorough joint work on the entire bilateral agenda, including disarmament," Itar-Tass and Interfax quoted her as saying.
Obama vowed on Monday to prevent nuclear proliferation during his presidency and urged the United States and Russia to lead the way.