British defence minister John Healey quit on Thursday over a months-long dispute over military spending, accusing deeply unpopular Prime Minister Keir Starmer of failing to commit the resources that are needed to keep the country safe from mounting threats.
The resignation, accompanied by a scathing public letter, is another indication that Starmer's authority is draining away and exposes the crisis at the heart of the British Government - how it can ramp up defence spending when there is little money to spare and the welfare budget keeps rising.
Healey had been locked in talks with Starmer and finance minister Rachel Reeves over how to meet the additional military spending needed, delaying Britain's defence investment plan, which was due last year.
"You have been unable, and the Treasury has been unwilling, to commit the resources that the nation needs to defend the country," Healey said in his letter to Starmer.
General Richard Barrons, formerly Commander of the Joint Forces Command and an author of a defence review in 2025 which was supposed to inspire the spending plan, told Reuters he was angry to see the government fail to deliver.
"The anger is if I had known that I'd never have done the review," he said. "It's clear they understand the risk that the UK is facing. And they say the right things about defence, and then they are guilty of failing to match those words with money."
Healey's unexpected resignation is another blow to Starmer, who is likely to face a challenge to his leadership in the coming months. Starmer's health minister, Wes Streeting, resigned last month accusing him of lacking a vision, and another challenger, Greater Manchester Mayor Andy Burnham, is attempting to return to frontline politics to launch a leadership bid.
A government source said Starmer had cut spending in other government departments and would deliver a spending plan that would guarantee the capability the armed forces need. Britain, historically a great military power, was left exposed in March when it was unable to immediately deploy an advanced warship to Cyprus after its air base there was hit by an Iranian-made drone.
Already contending with the US pivot away from protecting Europe, Britain is now the third biggest spender in NATO, having been overtaken by Germany in 2024, and the investment plan was aimed at bringing the armed forces to a state of "warfighting readiness".
Starmer has pledged the largest sustained increase in defence spending since the Cold War, aiming to lift it to three per cent of national output in the next parliament, meaning tens of billions of pounds of additional money for defence.
But Healey said the plan he had seen would increase defence spending to only 2.68 per cent in 2030, when it will already reach 2.6 per cent next year. That compares to Germany's plans to spend 3.7 per cent of its GDP on defence by 2030. France is set to be lower than Britain at 2.5 per cent.
Healey said Starmer's proposed increase in funding for defence fell "well short" of what was needed to help the military meet increased threats from Russia as well as demands to increase its presence in the Arctic and the Middle East.
The government has struggled to find the extra cash at a time when the economy is stagnating and both debt and the overall tax burden are at or close to their highest level in decades.
Healey, who had previously served in the governments of former prime ministers Tony Blair and Gordon Brown, was widely liked by colleagues and the defence sector.
One Labour lawmaker said the resignation was a "hammer blow to Starmer". Another said it was now inevitable Starmer would be forced out of his job within months. A third said it had taken the Labour defence team completely by surprise.
About a quarter of Starmer's lawmakers have called for him to step down after his Labour Party in early May suffered the heaviest losses for any British prime minister in local elections in more than three decades.
Healey's departure, less than a month before a NATO summit, will not help.
Kevin Craven, the head of Britain's defence lobby group ADS, said Healey's resignation was a "damning reflection" of Starmer's approach.
"The consequences for the UK, and indeed our allies, of getting our defence investment plan wrong - as now seems certain - are of a magnitude far beyond our worst fears," he said.
Starmer has previously said the plan was due to be published before a NATO summit beginning on July 7.
(Reporting by Muvija M, Sarah Young, Andrew MacAskill, Alistair Smout and Iain Withers; additional reporting by Sam Tabahriti, William James and Suban Abdulla, Editing by Kate Holton and Ros Russell)
