Cronin is born on August 29, 1922, in Dublin, the only son among three children of Con Cronin, a member of the IRA, and his wife Kate. After his father’s death, his mother works as a cook in a boarding school while the children are brought up by relatives in Ballinskelligs in the County KerryGaeltacht. Educated locally, he is deeply influenced by his Gaeltacht childhood; his later writings often refer to the hypocrisy of a state that romanticises the Gaeltacht while neglecting its social problems.
During World War II, Cronin’s sisters emigrate to England to train as nurses while he works as a labourer for Kerry County Council. In December 1941, he joins the Irish Army and is selected in 1943 for an officers’ training course, on which he forms a lifelong friendship with the future theatre directorAlan Simpson. He is commissioned and remains in the army until 1948.
Shortly thereafter Cronin emigrates to New York City, where he finds work as a journalist writing for The Advocate, an Irish American newspaper. He is strongly influenced by interviewing 1916 veterans for The Advocate and by contact with left-wing Irish American associates of Michael Quill, who played leading roles in the foundation of the Transport Workers Union of America. He becomes active in the semi-secret separatist organisation Clan na Gael, and in autumn 1955 returns to Ireland with the aim of helping the IRA to prepare for another military campaign.
Cronin begins work as a sub-editor with the Evening Press and also contributes summaries of world affairs to The Irish Times.
Cronin establishes contact with the IRA, and his military experience leads to his rapid assignment to GHQ staff. He is initially placed in charge of training and instruction, composing a manual on guerrilla warfare and twelve lectures on battlefield training. He teaches new military techniques and new recruits, such as the future IRA Chief of Staff Ruairí Ó Brádaigh, find him deeply impressive.
Cronin becomes a leading advocate of an early IRA campaign against Northern Ireland and becomes the chief strategist for Operation Harvest, a campaign which sees the carrying out of a range of military operations from direct attacks on security installations to disruptive actions against infrastructure. He is arrested on January 8, 1957, near the border in County Cavan. He is imprisoned several times over the course of the campaign (1956–1962).
Most of the IRA and Sinn Féin leadership are interned by the Dublin government on July 6, 1957. Cronin, one of the few to escape, becomes IRA Chief of Staff. He also acts for a time as editor of the movement’s newspaper, United Irishman. He tries to secure weapons from various sources, leading an unsuccessful raid on a British Army base at Blandford Camp in Dorset on February 16, 1958, and through contacts with Spanish republican exiles in Paris. The Irish American community remains the IRA’s main source of external support.
Cronin is arrested on September 30, 1958, and interned, causing considerable disarray, as he had been running much of the campaign single-handed. When the internees are released in March 1959, he resumes his position as Chief of Staff after a factional dispute causes the resignations of Tomás Óg Mac Curtain and the former Chief of Staff Tony Magan. He continues to argue that a sustained guerrilla campaign might yet succeed, but in June 1960 is again arrested and imprisoned for six months.
In November 1960, the Irish Freedom Committee (IFC), a Clan na Gael splinter group, accuses Cronin of being a communist and a “Free State agent,” supposedly implicated in the 1944 execution of Charlie Kerins. The IRA supports Cronin, but he nevertheless decides to resign successively as Chief of Staff, as a member of the Army Council, and as an IRA volunteer, on the grounds that his presence endangers the American support necessary for the continuance of the campaign. He then secures a job as a journalist on the Irish Independent. He withdraws his resignation in November 1961 after the Irish government reinstates military tribunals to try suspected IRA men. He is subsequently sentenced to six months’ imprisonment by a military tribunal and is in prison when the border campaign ends on February 26, 1962. Released on amnesty on April 19, 1962, he finally resigns from the IRA the next day.
By February 1966, Cronin has returned to the United States, where he resides for the remainder of his life, with regular visits to Ireland. He works as a journalist on the Newark Evening News and the Dow Jones News Service and is the U.S. correspondent of The Irish Times from 1967 to 1991, becoming that paper’s first Washington, D.C. correspondent.
In the 1970s Cronin takes a degree at New York University, then teaches and studies for a doctorate at The New School for Social Research in New York under Hans Morgenthau. His dissertation forms the basis for his magnum opus, Irish nationalism: its roots and ideology (1980). Although limited by its colonial model and socialist-republican intellectual framework, this historically oriented account draws on his extensive research and personal contacts to some effect.
Cronin is the author of a dozen books and pamphlets, including a biography of republican Frank Ryan, Washington’s Irish Policy 1916-1986: independence, partition, neutrality (1987), an authoritative account of Irish-US relations, Our Own Red Blood: The Story of the 1916 Rising (1966), and a number of works on guerrilla strategy, including an early Sinn Féin pamphlet Resistance under the pseudonym of J. McGarrity.
After the death of his first wife in 1974, Cronin marries Reva Rubinstein, a toxicologist. In 1980 they move to Washington, D.C. He has no children by either marriage, though his second wife brings him a stepson. After several years of illness, he dies in Baltimore, Maryland, on March 9, 2011. He is survived by his second wife, Reva Rubenstein Cronin.
Ó Brádaigh is born into a middle-class republican family. His father, Matt Brady, is an IRA volunteer who is severely wounded in an encounter with the Royal Irish Constabulary (RIC) in 1919. His mother, May Caffrey, is a Cumann na mBan volunteer and a 1922 graduate of University College Dublin (UCD). His father dies when he is ten and is given a paramilitary funeral led by his former IRA colleagues. His mother, prominent as the Secretary for the County Longford Board of Health, lives until 1974. He is educated at Melview National School at primary level and attends secondary school at St. Mel’s College, leaving in 1950, and graduates from University College Dublin in 1954. That year he takes a job teaching Irish language at Roscommon Vocational School in Roscommon. He is a deeply religious Catholic who refrains from smoking or drinking.
Ó Brádaigh joins Sinn Féin in 1950. While at university, in 1951, he joins the Irish Republican Army. In September 1951, he marches with the IRA at the unveiling of the Seán Russell monument in Fairview Park, Dublin. A teacher by profession, he is also a Training Officer for the IRA. In 1954, he is appointed to the Military Council of the IRA, a subcommittee set up by the IRA Army Council in 1950 to plan a military campaign against Royal Ulster Constabulary (RUC) barracks in Northern Ireland.
On August 13, 1955, Ó Brádaigh leads a ten-member IRA group in an arms raid on Hazebrouck Barracks, near Arborfield, Berkshire, England, a depot for the No. 5 Radar Training Battalion of the Royal Electrical and Mechanical Engineers. It is the biggest IRA arms raid in Britain. Most, if not all, of the weapons are recovered in a relatively short period of time. A van, traveling too fast, is stopped by the police and IRA personnel are arrested. Careful police work leads to weapons that had been transported in a second van and stored in London.
The IRA Border Campaign commences on December 12, 1956. As an IRA General Headquarters Staff (GHQ) officer, Ó Brádaigh is responsible for training the Teeling Column in the west of Ireland. During the Campaign, he serves as second-in-command of the Teeling Column. On December 30, 1956, he partakes in the Teeling Column attack on RUC barracks in Derrylin, County Fermanagh. RUC Constable John Scally is killed in the attack and is the first fatality of the new IRA campaign. Ó Brádaigh and others are arrested by the Garda Síochána across the border in County Cavan the day after the attack. They are tried and jailed for six months in Mountjoy Prison. A leading abstentionist, upon his arrest he refuses to recognize the authority of the Irish government and refuses to renounce violence in exchange for his release.
Upon completing his prison sentence, Ó Brádaigh is immediately interned at the Curragh Camp along with other republicans. On September 27, 1958, he escapes from the camp along with Dáithí Ó Conaill. While a football match is in progress, the pair cuts through a wire fence and escapes from the camp under a camouflage grass blanket. This is an official escape, authorised by the officer commanding (OC) of the IRA internees, Tomás Óg Mac Curtain. He is the first Sinn Féin TD on the run since the 1920s.
In October 1958, Ó Brádaigh becomes the IRA Chief of Staff, a position he holds until May 1959, when Seán Cronin is elected as his replacement. He is arrested in November 1959, refuses to answer questions, and is jailed in Mountjoy Prison under the Offences against the State Act. He is released in May 1960 and, after Cronin is arrested, again becomes Chief of Staff. Although he always emphasises that it is a collective declaration, he is the primary author of the statement ending the IRA Border Campaign in 1962. At the IRA 1962 Convention he indicates that he is not interested in continuing as Chief of Staff.
After Ó Brádaigh’s arrest in December 1956, he takes a leave from teaching at Roscommon Vocational School. He is re-instated and begins teaching again in late 1962, just after he is succeeded by Cathal Goulding in the position of Chief of Staff of the IRA. He remains an active member of Sinn Féin and is also a member of the IRA Army Council throughout the decade.
Ó Brádaigh opposes the decision of the IRA and Sinn Féin to drop abstentionism and to recognise the Westminster parliament in London, the Stormont parliament in Belfast and the Leinster House parliament in 1969/1970. On January 11, 1970, along with Seán Mac Stíofáin, he leads the walkout from the 1970 Sinn Féin Ard Fheis after the majority votes to end the policy of abstentionism, although the vote to change the Sinn Féin constitution fails to receive the required two-thirds majority. The delegates who walk out reconvene at the Kevin Barry Hall in Parnell Square, Dublin, and establish Provisional Sinn Féin.
Ó Brádaigh is voted chairman of the Caretaker Executive of Provisional Sinn Féin. That October, he formally becomes president of the party. He holds this position until 1983. In his presidential address to the 1971 Provisional Sinn Féin Ard Fheis, he says that the first step to achieving a United Ireland is to make Northern Ireland ungovernable. He apparently also serves on the Army Council or the executive of the Provisional Irish Republican Army until he is seriously injured in a car accident on January 1, 1984.
On May 31, 1972, Ó Brádaigh is arrested under the Offences Against the State Act and immediately commences a hunger strike. A fortnight later the charges against him are dropped and he is released. With Dáithí Ó Conaill he develops the Éire Nua policy, which is launched on June 28, 1972. The policy calls for a federal Ireland.
On December 3, 1972, Ó Brádaigh appears on the London Weekend TelevisionWeekend World programme. He is arrested by the Gardaí again on December 29, 1972, and charged in the newly established Special Criminal Court with Provisional IRA membership. In January 1973 he is the first person convicted under the Offences Against the State (Amendment) Act 1972 and is sentenced to six months in the Curragh Camp.
On December 10, 1974, Ó Brádaigh participates in the Feakle talks between the IRA Army Council and Sinn Féin leadership and the leaders of the Protestant churches in Ireland. Although the meeting is raided and broken up by the Gardaí, the Protestant churchmen pass on proposals from the IRA leadership to the British government. These proposals call on the British government to declare a commitment to withdraw, the election of an all-Ireland assembly to draft a new constitution and an amnesty for political prisoners.
The IRA subsequently calls a “total and complete” ceasefire intended to last from December 22, 1974 to January 2, 1975, to allow the British government to respond to proposals. British government officials also hold talks with Ó Brádaigh in his position as president of Sinn Féin from late December to January 17, 1975.
On February 10, 1975, the IRA Army Council, unanimously endorses an open-ended cessation of IRA “hostilities against Crown forces,” which becomes known as the 1975 truce. The IRA Chief of Staff at the time is Seamus Twomey of Belfast. It is reported in some quarters that the IRA leaders mistakenly believe they had persuaded the British Government to withdraw from Ireland and the protracted negotiations between themselves and British officials are the preamble to a public declaration of intent to withdraw. In fact, as British government papers now show, the British entertain talks with the IRA in the hope that this would fragment the movement further and score several intelligence coups during the talks. This bad faith embitters many in the republican movement, and another ceasefire does not happen until 1994.
In late December 1976, along with Joe Cahill, Ó Brádaigh meets two representatives of the Ulster Loyalist Central Co-ordinating Committee (ULCCC), John McKeague and John McClure, at the request of the latter body. Their purpose is to try to find a way to accommodate the ULCCC proposals for an independent Northern Ireland with the Sinn Féin’s Éire Nua programme. It is agreed that if this can be done, a joint Loyalist-Republican approach can then be made to request the British government to leave Ireland. Desmond BoalQC and Seán MacBrideSC are requested and accepted to represent the loyalist and republican positions. For months they have meetings in various places including Paris. The dialogue eventually collapses when Conor Cruise O’Brien, then Minister for Posts and Telegraphs and vociferous opponent of the Provisional IRA, becomes aware of it and condemns it on RTÉ Radio. As the loyalists had insisted on absolute secrecy, they feel unable to continue with the talks as a result.
In the aftermath of the 1975 truce, the Ó Brádaigh/Ó Conaill leadership comes under severe criticism from a younger generation of activists from Northern Ireland, headed by Gerry Adams, who becomes a vice-president of Sinn Féin in 1978. By the early 1980s, Ó Brádaigh’s position as president of Sinn Féin is openly under challenge and the Éire Nua policy is targeted in an effort to oust him. The policy is rejected at the 1981 Sinn Féin Ard Fheis and finally removed from the Sinn Féin constitution at the 1982 Ard Fheis. At the following year’s Ard Fheis, Ó Brádaigh and Ó Conaill resign from their leadership positions, voicing opposition to the dropping of the Éire Nua policy by the party.
On November 2, 1986, the majority of delegates to the Sinn Féin Ard Fheis vote to drop the policy of abstentionism if elected to Dáil Éireann, but not the British House of Commons or the Northern Ireland parliament at Stormont, thus ending the self-imposed ban on Sinn Féin elected representatives from taking seats at Leinster House. Ó Brádaigh and several supporters walk out and immediately assemble at Dublin’s West County Hotel and set up Republican Sinn Féin (RSF). As an ordinary member, he had earlier spoken out against the motion (resolution 162) in an impassioned speech. The Continuity IRA becomes publicly known in 1996. Republican Sinn Féin’s relationship with the Continuity IRA is similar to the relationship between Sinn Féin and the Provisional IRA when Ó Brádaigh was Sinn Féin’s president.
Ó Brádaigh believes RSF to be the sole legitimate continuation of the pre-1986 Sinn Féin, arguing that RSF has kept the original Sinn Féin constitution. RSF readopts and enhances his Éire Nua policy. His party has electoral success in only a few local elections.
Ó Brádaigh remains a vociferous opponent of the Good Friday Agreement, viewing it as a programme to copperfasten Irish partition and entrench sectarian divisions in the north. He condemns his erstwhile comrades in Provisional Sinn Féin and the Provisional IRA for decommissioning weapons while British troops remain in the country. In his opinion, “the Provo sell-out is the worst yet – unprecedented in Irish history.” He condemns the Provisional IRA’s decision to seal off a number of its arms dumps as “an overt act of treachery,” “treachery punishable by death” under IRA General Army Order Number 11.
In July 2005, Ó Brádaigh hands over a portion of his personal political papers detailing discussions between Irish Republican leaders and representatives of the British Government during 1974–1975 to the James Hardiman Library, National University of Ireland, Galway.
In September 2009, Ó Brádaigh announces his retirement as leader of Republican Sinn Féin. His successor is Des Dalton. He is also a long-standing member of the Celtic League, an organization which fosters cooperation between the Celtic people and promotes the culture, identity and eventual self-determination for the people, in the form of six sovereign states, for the Celtic nations – Wales, Cornwall, Brittany, Scotland, Isle of Man and Ireland.
After suffering a period of ill-health, Ó Brádaigh dies on June 5, 2013, at Roscommon County Hospital. His funeral is attended by 1,800 mourners including Fine Gael TD Frank Feighan and is policed by the Garda Emergency Response Unit and Gardaí in riot gear, for “operational reasons,” a show of force believed to have been to deter the republican tradition of firing a three-volley salute of shots over the final place of rest during the graveyard oration. As a result, there are some minor scuffles between gardai and mourners.
On February 26, 1962, due to lack of support, the Irish Republican Army (IRA) ends what it calls “The Campaign of Resistance to British Occupation,” which is also known as the “Border Campaign.”
The Border Campaign is the first major military undertaking carried out by the IRA since the harsh security measures of the Republic of Ireland and Northern Ireland governments had severely weakened it in the 1940s.
The campaign is launched with simultaneous attacks by approximately 150 IRA members on targets on the Border in the early hours of December 12, 1956. A BBC relay transmitter is bombed in Derry, a courthouse is burned in Magherafelt, a B-Specials post near Newry is burned, and a half-built Army barracks at Enniskillen is blown up. A raid on Gough barracks in Armagh is beaten off after a brief exchange of fire.
On December 14, an IRA column under Seán Garland detonates four bombs outside LisnaskeaRoyal Ulster Constabulary (RUC) station before raking it with gunfire. Further attacks on Derrylin and Roslea RUC barracks on the same day are beaten off.
On the evening of December 30, 1956, the Teeling Column attacks the Derrylin RUC barracks again, killing RUC constable John Scally, the first fatality of the campaign. The new year of 1957 begins with Seán Garland and Dáithí Ó Conaill planning an attack on the Police station at Brookeborough but they assault the wrong building. Two IRA men, Seán South and Fergal O’Hanlon, are killed in the abortive attack. Garland is seriously wounded in the raid. He and the remainder of the group are pursued back over the border by British soldiers.
The year 1957 is the most active year of the IRA’s campaign, with 341 incidents recorded. In November, the IRA suffers its worst loss of life in the period when four of its members die preparing a bomb, which explodes prematurely, in a farm house at Edentubber, County Louth. The civilian owner of the house is also killed.
By 1958, the campaign’s initial impetus has largely dissipated with many within the IRA in favour of calling the campaign off. By mid-year, 500 republicans are in gaol or interned. The decline in IRA activity leads the Fianna Fáil government in the South to end internment in March 1959.
Following their release, some of the interned leaders met Seán Cronin in a farmhouse in County Laois and are persuaded to continue the campaign “to keep the flame alive.” The number of incidents falls to just 26 in 1960, with many of these actions consisting of minor acts of sabotage.
The final fatality of the conflict comes in November 1961, when an RUC officer, William Hunter, is killed in a gun battle with the IRA in south County Armagh.
By late 1961, the campaign is over and has cost the lives of eight IRA men, four republican supporters, and six RUC members. In addition, 32 RUC members are wounded. A total of 256 Republicans are interned in Northern Ireland during the campaign and another 150 or so in the Republic.
The Campaign is officially called off on February 26, 1962, with a press release drafted by Ruairí Ó Brádaigh and several other persons including members of the Army Council. The statement is released by the Irish Republican Publicity Bureau and signed “J. McGarrity, Secretary.”
On February 26, 1962, due to lack of support, the 
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