In the past two decades England has been the site of at least two high-profile deadly operations and more than a dozen other suspicious deaths that have been linked to Russia. Yet the trial of this six-person cell appears to be the first time in recent history that the authorities have successfully investigated and prosecuted Russian agents operating on British soil. The trial and its outcome, then, are victories. They are small ones, however, relative to the scope of the threat. The Bulgarians seem to be only one part of a multiyear, multicountry operation to kill Grozev. That in turn is only a small part of what appears to be an ever-broadening campaign by the Kremlin, including kidnappings, poisonings, arson and terrorist attacks, to silence its opponents and sow fear abroad.