Russia’s involvement with, and use of, chemical weapons against military and civilian targets over the past two decades is deeply troubling and undermines the well-established international norms, law, and agreements against their use, such as those enshrined in the Chemical Weapons Convention. If the international response to Russia’s acts is not swift and stern, the failure to address growing concerns about Russia’s bad behavior on chemical weapons will only serve to encourage additional Russian bad behavior, not only with chemical weapons but in other areas as well.