Spare a thought for Sir Jeffrey Donaldson. Since the Northern Ireland Assembly elections in May 2022, he and the DUP party have prevented the restoration of power-sharing at Stormont over their objections to how Northern Ireland is affected by the UK’s Brexit agreement.   In the nine months of stalemate, Sir Jeffrey and the DUP have made a virtue of saying No. Their policy of stubborn resistance can be traced back to 1689 when a group of Apprentice Boys closed the gates of Derry and were prepared to risk starvation rather than allow the entry of forces led by the Catholic…