Julius and Ethel Rosenberg

In March 2016, Michael and Robert (via the Rosenberg Fund for Children) launched a petition campaign calling on President Obama and U.S. Attorney General Loretta Lynch to formally exonerate Ethel Rosenberg. In October 2016, both Michael and Robert Meeropol spoke with Anderson Cooper in an interview which aired on 60 Minutes. In January 2017 Senator Elizabeth Warren sent Obama a letter requesting consideration of the exoneration request. In 2021 Ethel's sons restarted the campaign to pardon Ethel, as they were more optimistic that President Biden will consider this favorably. Ethel Rosenberg: A Cold War Tragedy by Anne Sebba was published by Orion Books on 24 June 2021.

In 2015, following the most recent grand jury transcript release, Michael and Robert Meeropol called on U.S. President Barack Obama's administration to acknowledge that Ethel Rosenberg's conviction and execution was wrongful and to issue a proclamation exonerating her.

In 2009, extensive notes collected from KGB archives were made public in a book published by Yale University Press: Spies: The Rise and Fall of the KGB in America, written by John Earl Haynes, Harvey Klehr, and Alexander Vassiliev; Vassiliev's notebooks included KGB comments concerning Julius and Ethel Rosenberg.

The notebooks make clear that the KGB considered Julius Rosenberg an effective agent and his wife Ethel an enthusiastic supporter of his work. According to Vassiliev, Julius and Ethel worked personally with KGB agents who were given the codenames Twain and Callistratus and were also described as being the ones who recruited Greenglass and McNutt for the Manhattan Project spy mission. Though the public release of Vassiliev's notebooks did not occur until 2009, the notebooks had in fact been originally intercepted during the Venona decryptions.

For decades many people including the Rosenbergs' sons (Michael and Robert Meeropol) maintained that Julius and Ethel were innocent of spying on their country and were victims of Cold War paranoia. The extent of the Rosenbergs' activities came to light, however, when the U.S. government declassified information about them after the fall of the Soviet Union. This declassified information included a trove of decoded Soviet cables (code-name: Venona), which detailed Julius's role as a courier and recruiter for the Soviets, and information about Ethel's role as an accessory who helped recruit her brother David into the spy ring and did clerical tasks such as typing up documents that Julius then passed to the Soviets. In 2008, the National Archives of the United States published most of the grand jury testimony related to the prosecution of the Rosenbergs.

Numerous articles were published in 2008 related to the Rosenberg case. Deputy Attorney General of the United States William P. Rogers, who had been part of the prosecution of the Rosenbergs, discussed their strategy at the time in relation to seeking the death sentence for Ethel. He said they had urged the death sentence for Ethel in an effort to extract a full confession from Julius. He reportedly said, "She called our bluff", as she made no effort to push her husband to any action.

In 2008, Morton Sobell was interviewed after the revelations from grand jury testimony. He admitted that he had given documents to the Soviet contact, but said these had to do with defensive radar and weaponry. He confirmed that Julius Rosenberg was "in a conspiracy that delivered to the Soviets classified military and industrial information ... [on] the atomic bomb," and "He never told me about anything else that he was engaged in."

After Morton Sobell's 2008 confession, they acknowledged their father had been involved in espionage, but said that whatever atomic bomb information he passed to the Russians was, at best, superfluous, that the case was riddled with prosecutorial and judicial misconduct, that their mother was convicted on flimsy evidence to place leverage on her husband, and that neither deserved the death penalty.

Michael's daughter, Ivy Meeropol, directed a 2004 documentary about her grandparents, Heir to an Execution, which was featured at the Sundance Film Festival.

According to a 2001 book by his former handler Alexander Feklisov, Rosenberg was originally recruited to spy for the interior ministry of the Soviet Union, NKVD, on Labor Day 1942 by former spymaster Semyon Semyonov. By this time, following the invasion by Nazi Germany in June 1941, the Soviet Union had become an ally of the Western powers, which included the United States after Pearl Harbor. Rosenberg had been introduced to Semyonov by Bernard Schuster, a high-ranking member of the Communist Party USA and NKVD liaison for Earl Browder. After Semyonov was recalled to Moscow in 1944 his duties were taken over by Feklisov.

In 2001, David Greenglass recanted his testimony about his sister having typed the notes. He said, "I frankly think my wife did the typing, but I don't remember." He said he gave false testimony to protect himself and his wife, Ruth, and that he was encouraged by the prosecution to do so. "My wife is more important to me than my sister. Or my mother or my father, OK? And she was the mother of my children."

In 1995, the U.S. government made public many documents decoded by the Venona project, showing Julius Rosenberg's role as part of a productive ring of spies. For example, a 1944 cable (which gives the name of Ruth Greenglass in clear text) says that Ruth's husband David is being recruited as a spy by his sister (that is, Ethel Rosenberg) and her husband. The cable also makes clear that the sister's husband is involved enough in espionage to have his own codename ("Antenna" and later "Liberal"). Ethel did not have a codename, however, KGB messages which were contained in the Venona project's Vassiliev files, and which were not made public until 2009, revealed that both Ethel and Julius had regular contact with at least two KGB agents and were active in recruiting not only Ethel's brother David Greenglass, but also another Manhattan Project spy named Russell McNutt.

Michael and Robert co-wrote a book about their and their parents' lives, We Are Your Sons: The Legacy of Ethel and Julius Rosenberg (1975). Robert wrote a later memoir, An Execution in the Family: One Son's Journey (2003). In 1990, he founded the Rosenberg Fund for Children, a nonprofit foundation that provides support for children of targeted liberal activists, and youth who are targeted as activists.

Others, including non-Communists such as Jean Cocteau and Harold Urey, a Nobel Prize-winning physical chemist, as well as Communists or other left-leaning figures such as Nelson Algren, Bertolt Brecht, Albert Einstein, Dashiell Hammett, Frida Kahlo, and Diego Rivera, protested the position of the American government in what the French termed the U.S. Dreyfus affair. Einstein and Urey pleaded with President Truman to pardon the Rosenbergs. In May 1951, Pablo Picasso wrote for the communist French newspaper L'Humanité, "The hours count. The minutes count. Do not let this crime against humanity take place." The all-black labor union International Longshoremen's Association Local 968 stopped working for a day in protest. Cinema artists such as Fritz Lang registered their protest. Pope Pius XII appealed to President Dwight D. Eisenhower to spare the couple, but Eisenhower refused on February 11, 1953. All other appeals were also unsuccessful.

On June 19, 1953, Julius died after the first electric shock. Ethel's execution did not go smoothly. After she was given the normal course of three electric shocks, attendants removed the strapping and other equipment only to have doctors determine that Ethel's heart was still beating. Two more electric shocks were applied, and at the conclusion eyewitnesses reported that smoke rose from her head.

Nikita Khrushchev, leader of the Soviet Union from 1953 to 1964, said in his posthumously-published memoir that he "cannot specifically say what kind of help the Rosenbergs provided us" but that he learned from Joseph Stalin and Vyacheslav Molotov that they "had provided very significant help in accelerating the production of our atomic bomb."

The trial of the Rosenbergs and Sobell on federal espionage charges began on March 6, 1951, in the U.S. District Court for the Southern District of New York. Judge Irving Kaufman presided over the trial, with Assistant U.S. Attorney Irving Saypol leading the prosecution and criminal defense lawyer Emmanuel Bloch representing the Rosenbergs. The prosecution's primary witness, David Greenglass, said that he turned over to Julius Rosenberg a sketch of the cross-section of an implosion-type atom bomb. This was the "Fat Man" bomb dropped on Nagasaki, Japan, as opposed to a bomb with the "gun method" triggering device used in the "Little Boy" bomb dropped on Hiroshima.

On March 29, 1951, the Rosenbergs were convicted of espionage. They were sentenced to death on April 5 under Section 2 of the Espionage Act of 1917, which provides that anyone convicted of transmitting or attempting to transmit to a foreign government "information relating to the national defense" may be imprisoned for life or put to death.

In January 1950, the U.S. discovered that Klaus Fuchs, a German refugee theoretical physicist working for the British mission in the Manhattan Project, had given key documents to the Soviets throughout the war. Fuchs identified his courier as American Harry Gold, who was arrested on May 23, 1950.

On June 15, 1950, David Greenglass was arrested by the FBI for espionage and soon confessed to having passed secret information on to the USSR through Gold. He also claimed that his sister Ethel's husband Julius Rosenberg had convinced David's wife Ruth to recruit him while visiting him in Albuquerque, New Mexico, in 1944. He said Julius had passed secrets and thus linked him to the Soviet contact agent Anatoli Yakovlev. This connection would be necessary as evidence if there was to be a conviction for espionage of the Rosenbergs.

On July 17, 1950, Julius Rosenberg was arrested on suspicion of espionage based on David Greenglass's confession. On August 11, 1950, Ethel Rosenberg was arrested after testifying before a grand jury (see section, below).

Another conspirator, Morton Sobell, fled with his family to Mexico City after Greenglass was arrested. They took assumed names and he tried to figure out a way to reach Europe without a passport. Abandoning that effort, he returned to Mexico City. He claimed that he was kidnapped by members of the Mexican secret police and driven to the U.S. border, where he was arrested by U.S. forces. The U.S. government claimed Sobell was arrested by the Mexican police for bank robbery on August 16, 1950, and extradited the next day to the United States in Laredo, Texas.

Twenty senior government officials met secretly on February 8, 1950, to discuss the Rosenberg case. Gordon Dean, the chairman of the Atomic Energy Commission, said: "It looks as though Rosenberg is the kingpin of a very large ring, and if there is any way of breaking him by having the shadow of a death penalty over him, we want to do it." Myles Lane, a member of the prosecution team, said that the case against Ethel Rosenberg was "not too strong", but that it was "very important that she be convicted too, and given a stiff sentence." FBI director J Edgar Hoover wrote that "proceeding against the wife will serve as a lever" to make Julius talk.

The USSR and the U.S. were allies during World War II, but the Americans did not share information with, or seek assistance from, the Soviet Union regarding the Manhattan Project. The West was shocked by the speed with which the Soviets were able to stage their first nuclear test, "Joe 1", on August 29, 1949. However, the head official of the Soviet nuclear project, Lavrentiy Beria, used foreign intelligence, which he did not trust by default, only as a third-party check, rather than giving it directly to the design teams, who he did not clear to know about the espionage efforts, and the development was indigenous; considering that the pace of the Soviet program was set primarily by the amount of uranium that it could procure, it is difficult for scholars to judge accurately how much time was saved, if any.

Senator Daniel Patrick Moynihan, vice-chairman of the Senate Select Committee on Intelligence, investigated how much the Soviet spy ring helped the USSR to build their bomb. Moynihan found that in 1945, physicist Hans Bethe estimated that the Soviets would be able to build their own bomb in five years. "Thanks to information provided by their agents", Moynihan wrote in his book Secrecy, "they did it in four".

In February 1944, Rosenberg succeeded in recruiting a second source of Manhattan Project information, engineer Russell McNutt, who worked on designs for the plants at Oak Ridge National Laboratory. For this success Rosenberg received a $100 bonus. McNutt's employment provided access to secrets about processes for manufacturing weapons-grade uranium.

Julius Rosenberg joined the Army Signal Corps Engineering Laboratories at Fort Monmouth, New Jersey, in 1940, where he worked as an engineer-inspector until 1945. He was discharged when the U.S. Army discovered his previous membership in the Communist Party. Important research on electronics, communications, radar and guided missile controls was undertaken at Fort Monmouth during World War II.

Julius Rosenberg (May 12, 1918 – June 19, 1953) and Ethel Rosenberg (née Greenglass; September 28, 1915 – June 19, 1953) were American citizens who were convicted of spying on behalf of the Soviet Union. The couple were convicted of providing top-secret information about radar, sonar, jet propulsion engines, and valuable nuclear weapon designs. Convicted of espionage in 1951, they were executed by the federal government of the United States in 1953 at Sing Sing Correctional Facility in Ossining, New York, becoming the first American civilians to be executed for such charges and the first to receive that penalty during peacetime.

Julius Rosenberg was born on May 12, 1918, in New York City to a family of Jewish immigrants from the Russian Empire. The family moved to the Lower East Side by the time Julius was 11. His parents worked in the shops of the Lower East Side as Julius attended Seward Park High School. Julius became a leader in the Young Communist League USA while at City College of New York during the Great Depression. In 1939, he graduated with a degree in electrical engineering.

Ethel Greenglass was born on September 28, 1915, to a Jewish family in Manhattan, New York City. She had a brother, David Greenglass. She originally was an aspiring actress and singer, but eventually took a secretarial job at a shipping company. She became involved in labor disputes and joined the Young Communist League, where she met Julius in 1936. They married in 1939.