Luke Pollard has handed the next chancellor a problem dressed up as a budget line item: find £4.7 billion for defence spending, no questions asked, no context provided. The minister didn’t specify where this money should come from, only that it must be found. He said “find the resources” the way a parent tells a teenager to “figure it out” before leaving the house.

The gap exists because the current defence plan was costed in 2021, when nobody had checked the actual price of tanks lately. Inflation, it turns out, applies to military hardware. The incoming chancellor will inherit a spreadsheet that says defence needs nearly five billion pounds more than budgeted, and a political memo that says “this is non-negotiable.”

What makes this genuinely absurd is the lack of any accompanying proposal for how to pay for it. Defence spending is already ring-fenced. Tax rises are politically toxic. Cutting other departments harder creates other problems. So the next chancellor gets to choose between three equally bad options and gets no credit for any of them.

Pollard’s phrasing—“whoever that may be,” as if the role is genuinely uncertain—suggests even he knows this is someone else’s problem to solve. He’s not wrong. The math doesn’t work. The politics don’t work. And nobody in government wants to admit either fact out loud.