Pope Pius XII Did Consecrate Russia to the Immaculate Heart of Mary on July 7, 1952. It was a Half-Measure because It Did Not Conform to the Specific Requests of Our Lady to Sister Lucy of Fatima. Proof of Both of These Claims Below.
Let's end the controversy here. Russia --- by name ---- has been consecrated to the Immaculate Heart of Mary by a Pope. No question. However, not as Our Lady requested.
Here is the text from The Whole Truth About Fatima by Frere Michel of the Holy Trinity, Vol. III:
Page 333 from Frere Michel's authoritative book The Whole Truth About Fatima
Here is the text reference to the letter in which the true Sister Lucy indicates the conditions which must be fulfilled before Our Lady's requests would be fulfilled concerning the Consecration of Russia. There is a large gap in her authentic letters during the 50s, so we have no statement from the real Sister Lucy, that I know of, which states her attitude towards Pope Pius XII's real consecration. See, especially, the letter of December 2, 1940 where she explicitly mentions that the consecration must be done with all the Catholic bishops of the world who are ordered to do it.
For the pdf with the quotations (in English), see below: