Al Carns, who resigned as Minister for the Armed Forces on 12 June 2026, has broken his post-resignation silence to describe waste and inefficiency at the Ministry of Defence as "unbelievable," adding that he was specifically angered by the MoD's unwillingness to confront the sunk costs of legacy programmes.

Carns left office hours after Defence Secretary John Healey resigned, with his departure letter citing the government's defence investment plan as "neither transformative enough." His comments on 16 June 2026 go further, putting a sharper edge on a row that had already claimed two of the ministry's most senior figures within hours of each other.

The substantive dispute centres on how, not just how much. The UK's 2025 Strategic Defence Review committed Britain to reach 2.5% of GDP on defence by 2027 — brought forward from an earlier 2030 target — with a stated ambition to reach 3% in subsequent years. The National Audit Office projects MoD spending will rise 12% over the 2025 Spending Review period to 2028-29, while the Commons Library records a 3.6% average annual real-terms growth in the department's total DEL allocation since 2023-24. By any conventional measure, the money is moving in the right direction.

Carns' complaint is that the trajectory is being undermined from within. The sunk-cost problem he flagged is a familiar pathology in large defence procurement: programmes that are over-budget and under-performing attract continued investment because the political and institutional cost of cancellation looks higher than the cost of continuation. The result is that new capabilities are crowded out not by Treasury parsimony but by the gravitational pull of legacy commitments the department declines to unwind.

That structural critique carries particular weight coming from Carns. A decorated combat veteran — DSO, OBE, MC — and MP, he served as Minister for Veterans and People from July 2024 before moving to the Armed Forces brief. His background is not that of a politician performing hawkishness for constituency purposes; it is that of a career military officer who understands the operational cost of equipment shortfalls. When someone with that CV uses the word "unbelievable" about bureaucratic inefficiency, it is not a throwaway line.

The broader context matters here. The twin resignations of Healey and Carns expose a fault line that runs through most NATO allies' current defence debates: the gap between headline spending commitments and the institutional capacity to translate money into capability. Announcing a path to 3% of GDP is the easy part. Rationalising a procurement portfolio built on decades of political compromise — retiring platforms that have constituencies in marginal seats, writing off sunk costs that embarrass previous ministerial decisions — is where governments consistently flinch.

Whether the incoming ministerial team addresses that institutional problem or simply reaffirms the spending targets without tackling the internal allocation question will determine whether Carns' critique lands as a corrective or as a prophecy. The MoD's 12% spending increase buys political cover. It does not, by itself, buy transformation.

For defence industry, think-tank, and parliamentary audiences watching closely: the resignation of a minister specifically over the pace and quality of change — not over austerity — is a signal worth weighing carefully. It suggests the pressure point in UK defence policy has shifted. The constraint is no longer primarily fiscal. It is institutional.