It is evil.'Top Bolshevik Yakov Sverdlov - who specifically ordered the killing of the last tsar - was also Jewish, say supporters of this theory.
Tikhon is widely seen as Putin's personal confessor and spiritual adviser.
The ultra-conservative churchman once said: 'You can believe those rumours if you want, but they certainly are not spread by me.'The pair were introduced to one another by exiled Russian banker Sergei Pugachev, estranged lover of British socialite and former BBC Horse People presenter, Alexandra Tolstoy.
Laws restricting, regulating, or banning circumcision, some dating back to ancient times, have been enacted in many countries and communities.
In a number of modern states, circumcision is presumed to be legal, but laws pertaining to assault or child custody have been applied in cases involving circumcision.
After the 1917 Russian Revolution, the new Bolshevik government abolished all restrictions on Jews and proclaimed their opposition to all forms of anti-Semitism.
Yet persecution soon began afresh, with synagogues and other Jewish properties confiscated by the state in 1919 under anti-religion laws.Tsar Nicholas was shot with his wife and five children by Communist Bolsheviks in 1918 after Vladimir Lenin came to power, and wild rumours about the circumstances surrounding his death have circulated ever since.Boruch Gorin, a spokesman for the Federation of Jewish Communities, Russia's largest Jewish group, expressed a strong concern about the claims, which he described as a 'throwback to the darkest ages'.Some Christians in medieval Europe believed Jews murdered Christians to use their blood for ritual purposes, something which historians say has no basis in Jewish religious law or historical fact.The tsar and his family were executed by a Bolshevik firing squad on July 17, 1918, in a basement room of a merchant's house where they were held in the Ural Mountains city of Yekaterinburg.Under the Tsars, the country's five million Jews mostly lived in poverty and were confined to a Pale of Settlement in the west of the empire.