"It is Northern Ireland that provides the classic contemporary demonstration of Clausewitzian principles in action. In 1974 the Ulster Protestants rejected powersharing under the 1973 Sunningdale agreement to the point of launching a general strike which the British army warned the British government it could not handle. The government thereupon abandoned the project. But in 1998 the majority of Unionist political parties and at least half the Unionist electorate have come to accept power-sharing under the deal brokered by Mo Mowlam. Wherein lies the essential difference between 1973–74 and 1998? It lies in the profound yearning on the island of Ireland and on the British mainland (including Whitehall and Westminster) for "peace" after the intervening 25 years of unrelenting "war" on the part of the IRA, years of violence of the most extreme kind intended (to quote Clausewitz) "to compel our opponent to fulfil our will". Thus all the talk of compromise and reconciliation in Northern Ireland is just so much small-l liberal blather disguising the Clausewitzian reality that by their "continuation of politics by other means" the IRA have indeed compelled their opponents to fulfil their will."
January 1, 1970
https://en.wikiquote.org/wiki/Northern_Ireland