British finance minister John Healey said the government will use its spring spending review to outline how Britain will meet its NATO (North Atlantic military alliance) commitment to spend 3.5% of GDP on defence by 2035. He also said the review will set a target date for reaching 3%. Defence will be central to next year's spending review, while Healey's first budget is scheduled for October 28 and must comply with borrowing rules inherited from predecessor Rachel Reeves. Reaching 3% of GDP by 2030 would cost an additional £17.3 billion ($23.4 billion), according to the Office for Budget Responsibility, and the existing Defence Investment Plan has a £4.7 billion funding gap.