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The New Decade, New Approach agreement, also known as the Stormont House Agreement, led to the restoration of power-sharing in Northern Ireland. Signed in December 2014, it addressed issues of political stability, language rights, and cultural expression. This historic agreement paved the way for the return of devolved government, with Sinn Féin's Martin McGuinness serving as Deputy First Minister alongside First Minister Arlene Foster from the DUP.