By introducing different types of sources—published documents on Vatican's Eastern policy, archival material of the Soviet governmental agencies, egodocuments of local ecclesiastical leaders—this article tries to identify the role Lithuanian subjects have played in the field of Vatican-USSR relations during the first half of Pope John Paul II's pontificate. The research reveals that, since the end of 1970s, issues pertaining to the Lithuanian Catholic Church were considered priority agenda items—both within the halls of the Vatican and in the central government offices of the Soviet regime. An analysis of available sources illustrates also that interrelated issues of the boundaries of the Vilnius Archdiocese and the question of its further administration constituted the most acute node of issues during the period under review. The Soviet regime was the most interested in focusing on these issues, as it hoped thereby to dispel any mutual sympathies between Lithuanian Catholics and the Polish pope, put a stop to the emerging cooperation between Catholics in Lithuania and Poland, and bring an end to the politically costly case of Bishop Steponavičius, who by then had become a symbol of the Lithuanian Catholic Church's resistance. Suppressing of any attempts of the Holy See to be represented at commemoration of important events in Lithuania's history was yet another highly complicated task for the Soviet authorities.
