evidence: The political landscape in Northern Ireland leading up to the 1998 Agreement consisted of two key parties on the Catholic side — the republican Sinn Fein (the political wing of the IRA) and the nationalist Social Democratic and Labour Party18 — and two on the unionist side — the Ulster Unionist Party and the Democratic Unionist Party19 — along with smaller loyalist parties associated with Protestant paramilitaries,20 and one non-sectarian party, the Alliance Party. [...] The second leading party on the unionist side was the DUP, formed in the 1970s. Led by the fiery Presbyterian minister, Reverend Ian Paisley, the DUP was even more rigid in rejecting any accommodation with either the nationalists in Northern Ireland (especially through power sharing) or with the Irish government in the South. The DUP largely boycotted the peace negotiations, in part because it insisted on a complete and credible renunciation of violence and prior decommissioning before sitting down with any of the parties linked to paramilitaries (republican or loyalist). Ironically, following the Agreement, the longest period of stable devolved government in Northern Ireland came during a time when the DUP shared power with Sinn Fein (2010–17).41 The other key parties on the Protestant/unionist side were those associated with the loyalist paramilitaries. They were, in many respects, the counterparts of Sinn Fein/the IRA. These included the Progressive Unionist Party, headed by David Ervine and associated with the paramilitary Ulster Volunteer Force, and the Ulster Democratic Party, headed by Gary McMichael and associated with the Ulster Defence Association.