Irish Republican Army

Armed police keep watch from the roof of the Lyric Theatre in Belfast
Anti-monarchy graffiti on a wall in west Belfast, Northern Ireland
The queen and Prince Philip received a warm welcome when they visited the St Macartin's Church of Ireland Cathedral
Armed police keep watch from the roof of the Lyric Theatre in Belfast
Anti-monarchy graffiti on a wall in west Belfast, Northern Ireland
The queen and Prince Philip received a warm welcome when they visited the St Macartin's Church of Ireland Cathedral
Armed police keep watch from the roof of the Lyric Theatre in Belfast
Anti-monarchy graffiti on a wall in west Belfast, Northern Ireland
Lord Mountbatten was killed by the  Irish Republican Army while on holiday in 1979
The queen and Prince Philip received a warm welcome when they visited the St Macartin's Church of Ireland Cathedral
Armed police keep watch from the roof of the Lyric Theatre in Belfast
Anti-monarchy graffiti on a wall in west Belfast, Northern Ireland
Lord Mountbatten was killed by the  Irish Republican Army while on holiday in 1979
The queen and Prince Philip received a warm welcome when they visited the St Macartin's Church of Ireland Cathedral
Martin McGuinness was a commander in the Irish Republican Army
Lord Mountbatten killed by the  Irish Republican Army while on holiday in 1979
Armed police keep watch from the roof of the Lyric Theatre in Belfast
Armed police keep watch from the roof of the Lyric Theatre in Belfast
Lord Mountbatten was killed by the  Irish Republican Army while on holiday in 1979
Anti-monarchy graffiti on a wall in west Belfast, Northern Ireland

Pair found liable for N. Ireland's worst bombing

Two Irish republicans were found liable on Wednesday for the 1998 Omagh bombing that killed 29 people in the worst single attack of Northern Ireland's three decades of sectarian conflict.
 

Sinn Fein hold onto mid-Ulster seat

Sinn Fein on Friday retained their parliamentary seat of mid-Ulster in a by-election called when Northern Ireland Deputy First Minister Martin McGuinness stood down as a Westminster MP last year.
 

Third arrested over N. Ireland police car bomb

A third man has been arrested in Northern Ireland over the attempted murder of a police officer who found a bomb underneath his car.
 

Third arrested over bomb under N. Ireland policeman's car

A third man was arrested in Northern Ireland on Tuesday over the attempted murder of a police officer who found a bomb underneath his car.
 

Pair held over bomb under N. Ireland policeman's car

Two men were being held in custody in Northern Ireland on Tuesday after being arrested over the attempted murder of a police officer.
 

McGuinness gives up seat in British parliament

Northern Ireland's Deputy First Minister Martin McGuinness on Monday resigned from the British parliament after 15 years, during which he never actually took his seat.
 

Two men in court over murder of N. Ireland prison officer

Two men appeared in courts in Northern Ireland and in Ireland on Thursday facing charges over the murder of prison officer David Black last month, police said.
 

Man charged over murder of N. Ireland prison officer

Police in Northern Ireland on Wednesday charged a 36-year-old man in connection with the murder of a prison officer who was shot dead near Belfast as he drove along a motorway to work.
 

Israeli sought US data on Arab sites: documents

Jonathan Pollard, who is serving a US life sentence for spying for Israel, said he primarily sought information about Arab nations and not the United States, declassified CIA documents said Friday.
 

British PM says 'shocking' state collusion in N. Ireland murder

Prime Minister David Cameron said Wednesday that an official report had revealed a "shocking" level of British state collusion in the 1989 paramilitary murder of Northern Ireland lawyer Pat Finucane.
 

'Shocking' British collusion in Finucane murder: Cameron

Prime Minister David Cameron said Wednesday there was a "shocking" level of British state collusion in the 1989 paramilitary murder of Northern Ireland lawyer Pat Finucane.
 

'Shocking' state collusion in Finucane murder: Cameron

Prime Minister David Cameron said there was a "shocking" level of British state collusion in the 1989 paramilitary murder of Northern Ireland lawyer Pat Finucane.
 

Trial moved to June for infamous US mobster

Infamous Boston mobster James "Whitey" Bulger will go on trial for multiple murders in June next year, instead of March, a judge ruled Friday.
 

US mobster Bulger taken to hospital: report

Jailed infamous US mobster James "Whitey" Bulger was taken to a Boston hospital on Sunday complaining of chest pains, the Boston Globe newspaper reported.
 

Police free two suspects in NIreland murder case

Two men arrested by Northern Ireland police in connection with the murder of a prison officer were released without charge on Sunday, but another man remained in custody.
 

Three arrested over murder of N. Ireland prison officer

Police in Northern Ireland and Ireland arrested three men on Friday in connection with the murder of a prison officer who was shot dead near Belfast as he drove along a motorway to work.
 

Two held over N. Ireland prison officer murder

Police in Northern Ireland on Friday arrested two men in connection with the murder of a prison officer who was shot dead as he drove along a motorway to work.
 

IRA 'supergrass' says he was abandoned by MI5

A secret agent who infiltrated the IRA ranks for Britain's domestic security service MI5 broke cover Tuesday to complain that he had been abandoned by his handlers.
 

IRA bomb survivor 'killed children and self'

Police were retracing on Tuesday the last days of a former army sergeant, known for having survived an IRA nail bombing in 1982, who apparently stabbed his two young children to death before committing suicide.
 

US mobster to testify about government 'links'

An infamous Boston mobster, James "Whitey" Bulger, will testify at his trial about what he claims were his years of crime under the protection of US law enforcement, his lawyer said Monday.
 

Facts from the Wikipedia page:

Irish Republican Army
(Óglaigh na hÉireann)
Participant in Irish War of Independence
Hogan's Flying Column.gif
The Seán Hogan flying column during the War of Independence.
ActiveJanuary 1919 – March 1922
LeadersIRA Army Council
HeadquartersDublin
Area of
operations
Ireland
Strengthc. 100,000 enrolled by 1918, c. 15,000 effectives (maximum strength including front-line and support personnel) of whom 3,000 served as fighters at any one time
Originated asIrish Volunteers
BecameSplit into Irish Defence Forces and anti-treaty Irish Republican Army
OpponentsBritish Empire