Cathedral of the Immaculate Conception (Moscow) street. In the late 1970s the city considered renovating the building, possibly to use as a concert hall for organ recitals, or as a general cultural administration centre. These projects were never carried out due to resistance from the research institute. The "glasnost" (openness) policy, introduced during the rule of Mikhail Gorbachev, played a major role in developing religious freedom in the Soviet Union. Consequently, in 1989, a group of Moscow Catholics and the cultural association "The Polish House" (Russian: "Дом Польский"), suggested that the building should again be used for religious purposes. Following the city's assent, the first Mass
President of the Soviet Union President of the Soviet Union The President of the Soviet Union (, ), officially called President of the USSR () or President of the Union of Soviet Socialist Republics (), was the head of state of the Union of Soviet Socialist Republics from 15 March 1990 to 25 December 1991. Mikhail Gorbachev was the only person to occupy the office. Gorbachev was also General Secretary of the Communist Party of the Soviet Union between March 1985 and August 1991. He derived an increasingly greater share of his power from his position as president until he finally resigned as General Secretary