For 10 points, name this nationalist terrorist group which fought against Unionists and Britain during the Northern Ireland Troubles.
Members of this organization helped set up Wolfe Tone Societies under the leadership of Cathal Goulding, who caused a rift by passing motions to join a "national liberation front" and end parliamentary abstentionism. This group killed eighteen soldiers in the Warrenpoint ambush and also killed Lord Mountbatten. In 1974, this group bombed Westminster Hall as part of a mainland bombing campaign, though it ceased armed struggle after agreeing to Tony Blair's Good Friday Agreement. For 10 points, name this nationalist terrorist group which fought against Unionists and Britain during the Northern Ireland Troubles.
Members of this organization helped set up Wolfe Tone Societies under the leadership of Cathal Goulding, who caused a rift by passing motions to join a "national liberation front" and end parliamentary abstentionism.
Irish Republican Army [accept IRA]