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On 15 July 1946, Catholic historian Professor William Thomas Walsh interviewed Sister Lucia at her convent of the Dorothean Sisters at Vilar, Portugal. This interview clearly demonstrates that Our Lady’s request for the Consecration of Russia will only be fulfilled when the Pope and together with the world’s Catholic bishops consecrate specifically Russia.
"Sister Lucia made it plain that Our …
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On 15 July 1946, Catholic historian Professor William Thomas Walsh interviewed Sister Lucia at her convent of the Dorothean Sisters at Vilar, Portugal. This interview clearly demonstrates that Our Lady’s request for the Consecration of Russia will only be fulfilled when the Pope and together with the world’s Catholic bishops consecrate specifically Russia.
"Sister Lucia made it plain that Our Lady did not ask for the consecration of the world to Her Immaculate Heart. What She [Our Lady] demanded specifically was the consecration of Russia. Sister Lucia stated more than once and with deliberate emphasis: ‘What Our Lady wants is that the Pope and all the bishops in the world shall consecrate Russia to Her Immaculate Heart on one special day. If this is done, She will convert Russia and there will be peace. If it is not done, the errors of Russia will spread through every country in the world’.”

Professor Walsh asked, "Does this mean, in your opinion, that every country [including the United States of America and the Vatican City State], without exception, will be overcome by Communism?"
Sister Lucia replied, "Yes." [this was her precise answer] - William Thomas Walsh, Our Lady of Fatima 4th printing, (1947) p. 226; See also Louis Kaczmarek, The Wonders She Performs, 1986, p. 160

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There is the little-known revelation of Our Lady of Fatima to Sister Lucia in the early 1950s. Our Lady appeared to Sister Lucy in May 1952 and said: “Make it known to the Holy Father that I am always awaiting the Consecration of Russia to My Immaculate Heart. Without that Consecration, Russia will not be able to convert, nor will the world have peace.”- Il Pellegrinaggio Della Meraviglie, p. 440. Rome, 1960. This same work, published under the auspices of the Italian episcopate, affirms that this message was communicated to Pope Pius XII in June. Also, Canon Barthas mentioned that apparition in his communication to the Mariological Congress of Lisbon-Fatima, in 1967; see De Primoridiis cultus marianae, Acta congressus mariologici-mariana in Lusitania anno 1967 celebrati, p. 517. Rome, 1970. See Frère François de Marie des Anges, Fatima: Intimate Joy World Event, Book Four, Fatima: Tragedy and Triumph, pp. 21 and 37.
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Russia has not embraced the Catholic Faith and thus cannot possibly be said to have converted. Father Joaquin Alonso, probably the foremost Fatima expert of the 20th Century, had many interviews with Sister Lucy.
In 1976 he wrote: “... we should affirm that Sister Lucia always thought that the ‘conversion’ of Russia is not to be limited to the return of the Russian people to the Orthodox Christian religions, rejecting the Marxist atheism of the Soviets, but rather, it refers purely, plainly and simply to the total, integral conversion of Russia to the one true Church of Christ, the Catholic Church.”- La Verdad sobre el Secreto de Fatima, Fatima sin mitos, Father Joaquin Alonso, (2nd edition, Ejercito Azul, Madrid, 1988) p. 78. English translation by Joseph Cain. Original Spanish reads: “... podriamos decir que Lucia ha pensado siempre que la conversión de Rusia no se entiende solo de un retorno de los pueblos de Rusia a la religion cristiano-ortodoxa, rechazando el ateismo marxista y ateo de los soviets, sino que se refiere pura y llanmente a la conversion total e integral de un retorno a la unica y verdadera Iglesia, la catolica-romana.”
NOTE: It is an historical fact that Russia has NEVER been consecrated to the Immaculate Heart by any Pope together with all of the Catholic Bishops in strict accordance with the command of God given to Sister Lucia by Our Lady at Tuy, Spain June 13, 1929. Consequently, Russia never converted to Catholicism, the errors of Russia spread around the world, peace never came, wars are commonplace and Christians are persecuted & martyred.