*1937 [[w:Pope Pius XI|Pope Pius XI]] issued the encyclical ''[[w:Divini Redemptoris|Divini Redemptoris]]'', condemning Communism and the Soviet regime; the [[Church of Serbia|Serbian Orthodox Church]] led by Patr. [[Varnava (Rosic) of Serbia]] and Bp. [[Nikolai Velimirovic]] fiercely resisted the attempt by the government of Yugoslavian Prime Minister [[w:Milan Stojadinović|Milan Stojadinović]] to implement a [[w:Concordat|Concordat]] with the [[w:Holy See|Vatican]], which would have virtually established the [[Roman Catholic Church]] in Yugoslavia and granted it privileges denied to the Orthodox Church, resulting in the proposal never being ratified.<ref group="note">This treaty would have given enormous priviledges to the Roman Catholic Church which was actually a minority church in Yugoslavia (according to the 1931 census 48.7% of population were Orthodox, while 38% were Roman Catholic). The Serbs felt this to be an attack on the Orthodox Church, and the Church together with virtually all the Serbian people mounted unprecedented resistance to the proposed agreement. In the midst of the crisis Patriarch [[Varnava (Rosic) of Serbia|Varnava (Rosic)]] died. His health had suffered under the strain of the controversy, and it was even rumored that he had been poisoned. The concordat was passed by the parliament on the very day the patriarch died, and was immediately followed by the [[excommunication]] of those Serbian deputies who voted in favor of it. There was also a demonstration organized by the Church and headed by bishops and clergy that set out from the cathedral in Belgrade and was violently broken up by the police. The prime minister had a serious crisis on his hands and withdrew the proposal.</ref>

*1938 In the [[w:Volhynia|Volhynia]] region of modern day Western Ukraine, by 1938 the Polish government had overseen the destruction of 190 Orthodox churches and converted a further 150 churches to Roman Rite Catholicism, despite its Ukrainian majority, and despite Pope Leo XIII's encycical ''[[w:Orientalium Dignitas|Orientalium Dignitas]]'' of 1894; the few Orthodox churches that were permitted to stay open were forced to use the Polish language in their liturgies.<ref name="Kania">Dr. Andrew Thomas Kania. ''[http://www.catholicukes.org.au/tiki-read_article.php?articleId=785 Moral Hemophilia: Concept and Reality (cf. Luke 10: 29 – 37)].'' Fri 28 of Aug., 2009 11:13 EST.</ref>

===WWII and Post-WWII Era===