In July 1918, Sverdlov informed Sovnarkom that the Ural Regional Soviet had overseen the execution of the former Tsar and his immediate family in Yekaterinburg to prevent them from being rescued by advancing White troops. Although lacking proof, biographers and historians like Richard Pipes and Dmitri Volkogonov have expressed the view that the killing was probably sanctioned by Lenin; conversely, historian James Ryan cautioned that there was "no reason" to believe this. Whether Lenin sanctioned it or not, he still regarded it as necessary, highlighting the precedent set by the execution of Louis XVI in the French Revolution.