UK Defense Secretary John Healey Resigns Amid Military Spending Dispute

U.K. Defense Secretary John Healey resigned unexpectedly on Thursday, citing the government’s reluctance to allocate sufficient funds for military needs amid increasing threats. His departure intensifies pressure on Prime Minister Keir Starmer, already under scrutiny from Labour colleagues to resign.

Healey informed Starmer in a letter that the government’s Defense Investment Plan falls short of necessary provisions during a dangerous period. Publication of the plan was delayed due to reported disagreements between the Defense Ministry and the Treasury.

Among those who followed Healey was Al Carns, a decorated war veteran and junior minister in the defense ministry. Carns stated he could not support an investment level he deemed inadequate. He is considered a potential contender to challenge Starmer’s leadership.

Starmer responded in a letter to Healey expressing regret over his resignation but maintained that the funding plan would deliver sustainable and fair spending increases to ensure the U.K.’s safety. Late Thursday, Dan Jarvis, previously the security minister, was appointed as the new defense secretary.

Funding Concerns

Critics argue that the government’s defense spending plan is insufficient. Starmer promises to boost spending to 2.5% of GDP by 2027 and 3% by 2035, but many question the pace.

“You have been unable, and the Treasury has been unwilling, to commit the resources that the nation needs to defend the country at this time of rising threats,” Healey stated in his resignation letter.

Healey criticized the Treasury’s proposal, which would increase spending to 2.68% by 2030, following a rise to 2.6% next year. He emphasized the growing demands and commitments, mentioning conflicts like the Iran war, Russia’s invasion of Ukraine, and Moscow’s threats, leaving him no choice but to resign.

Gen. Richard Barrons, involved in a defense review underpinning the investment plan, accused the government of regressing due to inadequate funding. He warned this could diminish the U.K.’s standing within NATO, weaken alliances, and heighten vulnerability.

The government claims their plan represents the largest sustained boost in defense spending since the Cold War, asserting that decisions made by Starmer enhance national safety.

Current Political Climate

Healey, a trusted figure, served as defense secretary since the Labour Party was elected in July 2024. He was instrumental in rallying international support for Ukraine and organizing a multinational coalition for potential ceasefire security. He also spearheaded efforts for a maritime security force intended to protect the Strait of Hormuz post-Iran war.

The U.K., along with other NATO countries, faces pressure from U.S. President Donald Trump to amplify defense spending. Trump has often criticized NATO’s imbalance, questioning the U.S.’s role in ensuring European security. The U.K. military aims to reverse its decline amid a resurgent Russia, which invaded Ukraine in 2022, challenging European defenses.

NATO Secretary-General Mark Rutte expressed respect for Healey upon learning of his resignation. He acknowledged the difficulties countries face in balancing defense investments with other crucial expenses.

Healey’s resignation is likely to fuel discussions about Starmer’s political future. His leadership has come under fire due to a sequence of missteps since Labour took office. He seems unable to resolve the stalemate between Healey’s department and Treasury Chief Rachel Reeves on defense investment.

Olivia O’Sullivan from Chatham House remarked that the resignation significantly undermines Starmer, who had maintained a stable record on defense and foreign affairs. Greater Manchester Mayor Andy Burnham may challenge Starmer if he returns to Parliament in an upcoming special election.

Justin Crump, a former British tank commander and head of security consultancy Sibylline, remarked that Healey’s resignation points to systemic issues within the government, highlighting a lack of control, clarity, and commitment.

Contributors to this report included Mark Carlson in Brussels, along with Pan Pylas and Brian Melley in London.