Solzhenitsyn made an unsuccessful attempt, with the help of Tvardovsky, to have his novel Cancer Ward legally published in the Soviet Union.
This required the approval of the Union of Writers.
Though some there appreciated it, the work was ultimately denied publication unless it was to be revised and cleaned of suspect statements and anti-Soviet insinuations.

After Khrushchev's removal in 1964, the cultural climate again became more repressive.
Publishing of Solzhenitsyn's work quickly stopped; as a writer, he became a non-person, and, by 1965, the KGB had seized some of his papers, including the manuscript of The First Circle.
Meanwhile, Solzhenitsyn continued to secretly and feverishly work upon the most well-known of all his writings, The Gulag Archipelago.
 The seizing of his novel manuscript first made him desperate and frightened, but gradually he realized that it had set him free from the pretenses and trappings of being an "officially acclaimed" writer, something which had come close to second nature, but which was becoming increasingly irrelevant.

After the KGB had confiscated Solzhenitsyn's materials in Moscow, during 1965–67, the preparatory drafts of The Gulag Archipelago were turned into finished typescript in hiding at his friends' homes in Estonia.
Aleksandr Solzhenitsyn had befriended Arnold Susi, a lawyer and former Estonian Minister of Education in a Lubyanka Prison cell.
After completion, Solzhenitsyn's original handwritten script was kept hidden from the KGB in Estonia by Arnold Susi's daughter Heli Susi until the collapse of the Soviet Union.

In 1969, Solzhenitsyn was expelled from the Union of Writers.
In 1970, he was awarded the Nobel Prize in Literature.
He could not receive the prize personally in Stockholm at that time, since he was afraid he would not be let back into the Soviet Union.
Instead, it was suggested he should receive the prize in a special ceremony at the Swedish embassy in Moscow.
 The Swedish government refused to accept this solution because such a ceremony and the ensuing media coverage might upset the Soviet Union and damage Swedish-Soviet relations.
Instead, Solzhenitsyn received his prize at the 1974 ceremony after he had been expelled from the Soviet Union.

The Gulag Archipelago was composed from 1958 to 1967.
 It was a three-volume, seven-part work on the Soviet prison camp system.
The book drew from Solzhenitsyn's experiences and the testimony of 256 former prisoners and Solzhenitsyn's own research into the history of the Russian penal system.
 It discusses the system's origins from the founding of the Communist regime, with Vladimir Lenin having responsibility, detailing interrogation procedures, prisoner transports, prison camp culture, prisoner uprisings and revolts, and the practice of internal exile.
According to Gulag historian Anne Applebaum, The Gulag Archipelago's rich and varied authorial voice, its unique weaving together of personal testimony, philosophical analysis, and historical investigation, and its unrelenting indictment of communist ideology made it one of the most influential books of the 20th century.
The Gulag Archipelago has sold over thirty million copies in thirty-five languages.

On 8 August 1971, the KGB allegedly attempted to assassinate Solzhenitsyn using an unknown chemical agent (most likely ricin) with an experimental gel-based delivery method.
The attempt left him seriously ill but he survived.

Although The Gulag Archipelago was not published in the Soviet Union, it was extensively criticized by the Party-controlled Soviet press.
An editorial in Pravda on 14 January 1974 accused Solzhenitsyn of supporting "Hitlerites" and making "excuses for the crimes of the Vlasovites and Bandera gangs."
According to the editorial, Solzhenitsyn was "choking with pathological hatred for the country where he was born and grew up, for the socialist system, and for Soviet people."

During this period, he was sheltered by the cellist Mstislav Rostropovich, who suffered considerably for his support of Solzhenitsyn and was eventually forced into exile himself.
Solzhenitsyn made an unsuccessful attempt, with the help of Tvardovsky, to have his novel Cancer Ward legally published in the Soviet Union. This required the approval of the Union of Writers. Though some there appreciated it, the work was ultimately denied publication unless it was to be revised and cleaned of suspect statements and anti-Soviet insinuations.
After Khrushchev's removal in 1964, the cultural climate again became more repressive. Publishing of Solzhenitsyn's work quickly stopped; as a writer, he became a non-person, and, by 1965, the KGB had seized some of his papers, including the manuscript of The First Circle. Meanwhile, Solzhenitsyn continued to secretly and feverishly work upon the most well-known of all his writings, The Gulag Archipelago.  The seizing of his novel manuscript first made him desperate and frightened, but gradually he realized that it had set him free from the pretenses and trappings of being an "officially acclaimed" writer, something which had come close to second nature, but which was becoming increasingly irrelevant.
After the KGB had confiscated Solzhenitsyn's materials in Moscow, during 1965–67, the preparatory drafts of The Gulag Archipelago were turned into finished typescript in hiding at his friends' homes in Estonia. Aleksandr Solzhenitsyn had befriended Arnold Susi, a lawyer and former Estonian Minister of Education in a Lubyanka Prison cell. After completion, Solzhenitsyn's original handwritten script was kept hidden from the KGB in Estonia by Arnold Susi's daughter Heli Susi until the collapse of the Soviet Union.
In 1969, Solzhenitsyn was expelled from the Union of Writers. In 1970, he was awarded the Nobel Prize in Literature. He could not receive the prize personally in Stockholm at that time, since he was afraid he would not be let back into the Soviet Union. Instead, it was suggested he should receive the prize in a special ceremony at the Swedish embassy in Moscow.  The Swedish government refused to accept this solution because such a ceremony and the ensuing media coverage might upset the Soviet Union and damage Swedish-Soviet relations. Instead, Solzhenitsyn received his prize at the 1974 ceremony after he had been expelled from the Soviet Union.
The Gulag Archipelago was composed from 1958 to 1967.  It was a three-volume, seven-part work on the Soviet prison camp system. The book drew from Solzhenitsyn's experiences and the testimony of 256 former prisoners and Solzhenitsyn's own research into the history of the Russian penal system.  It discusses the system's origins from the founding of the Communist regime, with Vladimir Lenin having responsibility, detailing interrogation procedures, prisoner transports, prison camp culture, prisoner uprisings and revolts, and the practice of internal exile. According to Gulag historian Anne Applebaum, The Gulag Archipelago's rich and varied authorial voice, its unique weaving together of personal testimony, philosophical analysis, and historical investigation, and its unrelenting indictment of communist ideology made it one of the most influential books of the 20th century. The Gulag Archipelago has sold over thirty million copies in thirty-five languages.
On 8 August 1971, the KGB allegedly attempted to assassinate Solzhenitsyn using an unknown chemical agent (most likely ricin) with an experimental gel-based delivery method. The attempt left him seriously ill but he survived.
Although The Gulag Archipelago was not published in the Soviet Union, it was extensively criticized by the Party-controlled Soviet press. An editorial in Pravda on 14 January 1974 accused Solzhenitsyn of supporting "Hitlerites" and making "excuses for the crimes of the Vlasovites and Bandera gangs." According to the editorial, Solzhenitsyn was "choking with pathological hatred for the country where he was born and grew up, for the socialist system, and for Soviet people."
During this period, he was sheltered by the cellist Mstislav Rostropovich, who suffered considerably for his support of Solzhenitsyn and was eventually forced into exile himself.
Aleksandr Solzhenitsyn