A file containing documents concerning relations between the Soviet Union and other Eastern European countries. Subjects covered in the file include the changing nature of the Romanian-Soviet relationship, influenced by Romanian economic difficulties; a visit to Yugoslavia by the Soviet foreign minister, Andrei Gromyko; a new Soviet ambassador to Hungary; Soviet criticism of Yugoslavs working abroad; and visits to the Soviet Union by the Czechoslovak foreign minister, Bohuslav Chňoupek, and the president, Gustav Husák. Other subjects discussed in the file include Soviet interest in the Hungarian model of economic reform; Soviet involvement in the building of a nuclear power station in Hungary; Soviet criticism of a Yugoslav play about the Russian revolution; a visit to Moscow by the Bulgarian prime minister, Grisha Filipov; and meetings in Crimea between the Soviet leader, Leonid Brezhnev, and other communist leaders.