From 1969 until 1997, the Provisional Irish Republican Army (IRA) conducted an armed paramilitary campaign primarily in Northern Ireland and England, aimed at ending British rule in Northern Ireland in order to create a united Ireland.
The Provisional IRA emerged from a split in the Irish Republican Army in 1969, partly as a result of that organisation's perceived failure to defend Catholic neighbourhoods from attack in the 1969 Northern Ireland riots. The Provisionals gained credibility from their efforts to physically defend such areas in 1970 and 1971. From 1971 to 1972, the IRA took to the offensive and conducted a relatively high-intensity campaign against the British and Northern Ireland security forces and the infrastructure of the state.