Newly declassified files have revealed that Dublin's most senior intelligence official advised the government that a Northern Ireland mountain may be hiding US nuclear weapons.

Details of correspondence and government letters on the 1989 rugby tour controversy have been released by the National Archives as part of the 30-year rule.

The Irish government was “outraged” after the Irish Rugby Football Union (IRFU) took part in a rugby event in apartheid South Africa, state papers have revealed.

The US feared the Russians could be plotting an undercover Cold War spy base in a disused Cork dockyard, newly declassified government documents suggest.

Though everyone on this island shares, more or less, a common past many, often conflicting, versions of it are offered as an accurate record.

My mother suffered in State-run children’s homes, but the bill proposing to lock away for 75 years all evidence of such abuse is concerned with secrecy, not privacy, says Fionna Fox.

An advisory council to the National Archives told the Government as far back as 2013 that it was possible to seal child abuse records for longer than 30 years.

Unseen colour footage and the testimonies of surviving WW2 veterans result in an immersive film about war, trauma and the human experience, writes Esther McCarthy.

Just over a week ago, it emerged that the Cabinet did something very “dangerous”.

The State’s proposal to seal the records of the Laffoy/Ryan commission of inquiry and its associated bodies for 75 years is unjustified and wrong, writes

The repercussions from the explosive testimonies at the Senate judiciary committee last week will be felt in the US for years to come, according to Helen Coster

Maps based on painstaking analysis of medieval papal taxes have helped create a clearer picture of population and wealth in Ireland 700 years ago.

Maps based on painstaking analysis of medieval papal taxes have helped create a clearer picture of population and wealth in Ireland 700 years ago.

More than €193.5m has been paid out in legal costs relating to applications for the Government’s redress scheme for victims of institutional child abuse.

It is one of the most significant projects to be undertaken in the State, yet the Cork events centre only gets a mention in Project Ireland 2040.

Charlie Haughey was warned by loyalist paramilitaries that MI5 ordered his assassination, declassified state papers have revealed.

William Whitelaw, former British deputy prime minister and the first Northern Ireland secretary, believed power-sharing in the region could lead to a united Ireland, newly declassified State papers reveal.

Six wrongfully imprisoned for Birmingham pub bombings ‘offered nothing but false hope, promises’

The US National Archives released more than 13,200 records today, some hundreds of pages long, related to the assassination of President John F. Kennedy in 1963.

A British local newspaper received an anonymous call about "some big news" in America 25 minutes before President John F Kennedy was assassinated, documents have shown.

US President Donald Trump is delaying the release of some files related to the John F Kennedy assassination that were due to come out on Thursday.

Both religious orders and the State are failing to make any serious attempt to centralise, digitise and open up access to records of institutions, writes Conall Ó Fátharta. 

Irish-born merchant seamen were sent to concentration camps because they refused to work for the Germans, new documents show.

The IRA was able to tap Garda telephone calls, the government was forced to admit.

The IRA was able to tap Garda telephone calls, the Irish Government accepted in the 1980s.

Anybody who wants to find out about a relative’s time in the RIC needs to start with their service record and find the service number, according to Michael Guilfoyle.

Britain's most important double agent of the Second World War almost had his cover blown because his homesick wife could not stand living in England, according to secret files made public for the first time.

The board of the National Archives say the service will be put under "untenable pressure" if Ireland follows the UK's lead and changes the '30 year rule'.

British army records relating to the 1916 Rising and the War of Independence have been opened to the world in one of the most ambitious online projects for family researchers and historians.

Though his mum had beaten him to the forms, Noel Baker still learned a lot from the census forms filled out by his ancestors in 1901 and 1911

Garda killer Michael McHugh, who was released at the start of this month after serving 30 years of a 40-year prison sentence, was branded a reckless but highly intelligent criminal in Government documents.

A large number of people from Co Donegal who applied for a postal vote in the 1985 local elections were ineligible, a Garda investigation concluded.

John Hume wanted to have talks with the IRA Army Council in what senior government officials thought was a plan for a public and damaging confrontation.

Plans to introduce a distinctive new 20p coin were shelved after it left consumers short-changed — a blunder which has turned out to be lucrative for some.

Children will collect stories about local customs and history in a digital-age repeat of a 1930s folklore project as part of the 1916 centenary schools programme.

The consent given by parish priests in the 1950s to allow the National Library of Ireland (NLI) to microfilm their records of births, marriages and deaths was courageous.

Century-old secret police files released to the public for the first time reveal the efforts made to monitor suspected revolutionaries in the 11 months leading up to the 1916 Rising.

Secret police files from one of the most pivotal periods in Irish history are being made public.

We’ve never been closer to the past. The continuing proliferation of online searchable material is making available to us all an ocean of information and artefacts from our past. 

The hell of Gallipoli has inspired the latest drama from Anu, writes Padraic Killeen.

Margaret Thatcher's most senior official warned privately that her financial sector reforms were giving birth to a new culture of corner-cutting and "unscrupulous" practices in the City, according to newly-released UK government papers.

Garret FitzGerald made an impassioned appeal to Margaret Thatcher to save their talks on the future of Northern Ireland, warning that failure could trigger a civil war that would “drag down” the entire island, according to newly-released official papers.

While taoiseach in 1982 Charles Haughey fulfilled the invitation to the White House for St Patrick’s Day that had been extended to his predecessor Garret Fitz-Gerald. Mr Haughey then invited the president to Ireland on a state visit.