The 1996 Manchester bombing was an attack carried out by the Provisional Irish Republican Army (IRA) on Saturday, 15 June 1996. The IRA detonated a 1,500-kilogram (3,300 lb) lorry bomb on Corporation Street in the centre of Manchester, England. It was the biggest bomb detonated in Great Britain since the Second World War. It targeted the city's infrastructure and economy and caused significant damage, estimated by insurers at £700 million (equivalent to £1.4 billion in 2021), a sum surpassed only by the 1993 Bishopsgate bombing, also by the IRA, and the 2001 September 11 attacks.At the time, England was hosting the Euro '96 football championships and a Russia vs. Germany match was scheduled to take place in Manchester the following day. The IRA sent telephoned warnings about 90 minutes before the bomb detonated. At least 75,000 people were evacuated, but the bomb squad were unable to defuse the bomb in time. More than 200 people were injured, but there were no fatalities despite the strength of the bomb, which has been largely credited to the rapid response of emergency services in evacuating the city centre.Although Manchester had been targeted by the IRA before, it had not been subjected to an attack on this scale. In February 1996, the IRA had ended its seventeen-month ceasefire with a large truck bomb attack on London's Canary Wharf financial district, though the 3,300-pound bomb of Manchester was three times the size of the Canary Wharf bomb. The Manchester bombing was condemned by the British and Irish governments and U.S. President Bill Clinton. Five days after the blast, the IRA issued a statement from Dublin in which it claimed responsibility, but regretted causing injury to civilians.Several buildings were damaged beyond repair and had to be demolished, while many more were closed for months for structural repairs. Most of the rebuilding work was completed by the end of 1999, at a cost of £1.2 billion, although redevelopment continued until 2005. The perpetrators have not been caught, and Greater Manchester Police have conceded it is unlikely that anyone will be charged in connection with the bombing. The bombing has, however, been viewed by some as a "catalyst" for Manchester's mass regeneration, turning it into a modern "powerhouse" city with above-national average economic growth in the 20 years following the bombing.

The Troubles (Irish: Na Trioblóidí) were an ethno-nationalist conflict in Northern Ireland that lasted about 30 years from the late 1960s to 1998. Also known internationally as the Northern Ireland conflict, it is sometimes described as an "irregular war" or "low-level war". The conflict began in the late 1960s and is usually deemed to have ended with the Good Friday Agreement of 1998. Although the Troubles mostly took place in Northern Ireland, at times violence spilled over into parts of the Republic of Ireland, England and mainland Europe.

The conflict was primarily political and nationalistic, fuelled by historical events. It also had an ethnic or sectarian dimension but despite use of the terms 'Protestant' and 'Catholic' to refer to the two sides, it was not a religious conflict. A key issue was the status of Northern Ireland. Unionists and loyalists, who for historical reasons were mostly Ulster Protestants, wanted Northern Ireland to remain within the United Kingdom. Irish nationalists and republicans, who were mostly Irish Catholics, wanted Northern Ireland to leave the United Kingdom and join a united Ireland.

The conflict began during a campaign by the Northern Ireland Civil Rights Association to end discrimination against the Catholic/nationalist minority by the Protestant/unionist government and local authorities. The government attempted to suppress the protests. The police, the Royal Ulster Constabulary (RUC), were overwhelmingly Protestant and accused of sectarianism and police brutality. The campaign was also violently opposed by loyalists, who said it was a republican front. Increasing tensions led to the August 1969 riots and the deployment of British troops, in what became the British Army's longest operation. "Peace walls" were built in some areas to keep the two communities apart. Some Catholics initially welcomed the British Army as a more neutral force than the RUC, but soon came to see it as hostile and biased, particularly after Bloody Sunday in 1972.The main participants in the Troubles were republican paramilitaries such as the Provisional Irish Republican Army (IRA) and the Irish National Liberation Army (INLA); loyalist paramilitaries such as the Ulster Volunteer Force (UVF) and Ulster Defence Association (UDA); British state security forces such as the British Army and RUC; and political activists. The security forces of the Republic of Ireland played a smaller role. Republicans carried out a guerrilla campaign against British forces as well as a bombing campaign against infrastructural, commercial and political targets. Loyalists attacked republicans/nationalists and the wider Catholic community in what they described as retaliation. At times, there were bouts of sectarian tit-for-tat violence, as well as feuds within and between paramilitary groups. The British security forces undertook policing and counter-insurgency, primarily against republicans. There were incidents of collusion between British state forces and loyalist paramilitaries. The Troubles also involved numerous riots, mass protests and acts of civil disobedience, and led to increased segregation and the creation of temporary no-go areas.

More than 3,500 people were killed in the conflict, of whom 52% were civilians, 32% were members of the British security forces and 16% were members of paramilitary groups. Republican paramilitaries were responsible for some 60% of the deaths, loyalists 30% and security forces 10%. The Northern Ireland peace process led to paramilitary ceasefires and talks between the main political parties, which resulted in the Good Friday Agreement of 1998. This Agreement restored self-government to Northern Ireland on the basis of "power-sharing" and it included acceptance of the principle of consent, commitment to civil and political rights, parity of esteem, police reform, paramilitary disarmament and early release of paramilitary prisoners. There has been sporadic violence since the Agreement, including punishment attacks and a campaign by dissident republicans.