John Healey resigned as the United Kingdom's Secretary of State for Defence on Thursday, delivering a sharp critique of Prime Minister Keir Starmer's military spending plans. In his resignation letter, Healey argued that the financial settlement for the long-awaited Defence Investment Plan (DIP) falls dangerously short of what is needed at a time of heightened global threats.
The DIP, originally scheduled for publication in autumn 2025, is meant to outline the UK's defence expenditure over the next decade. However, it has faced repeated delays despite warnings from military leaders about a significant funding gap. Healey stated that he was first shown the full financial details on Monday afternoon and concluded that the plan would force him to make decisions that "would reduce the readiness of our Forces and increase the risk to personnel on operations."
A Stinging Rebuke from Within
Healey's resignation letter, addressed to Starmer, did not mince words. "Your DIP financial settlement falls well short of what is required for defence and the country at this dangerous time," he wrote. He added that without a plan that "meets the moment," the UK could become "less safe." Despite his departure, Healey pledged continued support for the Labour government and expressed pride in his work as defence secretary.
The resignation has drawn praise from across the political spectrum. Al Carns, the UK minister of state for the armed forces and Labour MP for Birmingham Selly Oak, described Healey's service as "serious service in a serious time." On X, Carns wrote that he had seen "the hours, the care, and the seriousness he brought to every brief, including the hardest ones," adding that the Ministry of Defence faces problems that "do not lend themselves to easy answers."
Reform UK's Robert Jenrick commended Healey's decision and called for Starmer and Chancellor of the Exchequer Rachel Reeves to step down. "This Government has all the money in the world for Ed Milliband’s mad plans, foreign aid, and benefits for foreigners. But nothing for our armed forces. Good on John Healey. Shame on them," Jenrick said in a statement.
Former Foreign Secretary James Cleverly, a Conservative, noted on social media that he had "always respected" Healey and that he "clearly takes defence of the realm and defence of our interests more seriously than either Keir Starmer or Rachel Reeves."
European Defence in a Shifting Landscape
The UK's defence spending debate comes as European nations grapple with their own military commitments. Germany's defence resolve has been under scrutiny, with analysts questioning whether Berlin's increased spending targets translate into real capabilities. Meanwhile, the European Union has moved to streamline defence procurement to counter Russian threats and potential US disengagement from the continent.
Healey's resignation also highlights the broader challenge of balancing fiscal constraints with security needs. The UK, like many European countries, faces pressure to modernise its armed forces while managing public debt. The DIP's delays suggest internal disagreements over priorities, a tension also visible in EU budget negotiations, where Cyprus has proposed spending cuts amid competing demands.
The timing of Healey's departure is particularly sensitive. With the war in Ukraine ongoing and Russian drone attacks intensifying on civilian areas, European defence ministers are under pressure to demonstrate resolve. The UK, as a key NATO member and nuclear power, plays a central role in the alliance's deterrence posture.
Healey's resignation may also reverberate in the Labour Party, which has sought to position itself as fiscally responsible while maintaining a strong defence stance. Starmer now faces the task of appointing a new defence secretary and reassuring allies that the UK remains committed to its military obligations.
For now, the DIP remains in limbo, and the UK's armed forces await clarity on their future funding. As one former senior officer put it, "The gap between rhetoric and resources is widening, and that is a dangerous place to be."
