 Complete the following phrase:  After being released from the POW camp, Salavdi moved to the United States, where he began to periodically publish and appear on the air of the Voice of America and Radio Liberty stations, trying to draw the attention of the free world and heads of democratic states to the persecution for Stalin regime. The most significant contribution that Gugaev made to the rehabilitation of the peoples repressed in the USSR was his appeal to the United Nations on 1 July 1955, on the eve of the arrival of Nikita Khrushchev at the United Nations General Assembly. The document revealed the essence of the Stalinist actions including the wholesale deportations of all ethnic 