The Russian State Duma passed a law withdrawing Russian ratification of the Comprehensive Nuclear Test Ban Treaty (CTBT) yesterday. Duma Speaker Vyacheslav Volodin then sent a message: “If the United States gets the message today, that due to its own behavior, we have revoked the ratification of the treaty and are ready to take appropriate action to maintain global security, it will refrain from testing nuclear weapons,” as reported by TASS.