In Northern Ireland , the Real Irish Republican Army and the Continuity Irish Republican Army , two small , radical splinter groups who broke with the Provisional Irish Republican Army , continue to exist . They are dwarfed in size by the Provisional IRA and have been less successful in terms of both popularity among Irish republicans and guerrilla activity : The Continuity IRA has failed to carry out any killings , while the Real IRA 's only attacks resulting in deaths were the 1998 Omagh bombing , which killed 29 civilians , a booby trap torch bomb in Derry which killed a former Ulster Defence Regiment soldier , and a 2009 attack on a Northern Ireland military installation which killed 2 British soldiers and wounded several others
Omagh bombing
Omagh bombing
History of guerrilla warfare