European Security — 2026-06-11

UK Defence Secretary John Healey Resigns Over Military Spending Dispute With Starmer Government

BLUFHealey's departure leaves Starmer exposed at the July NATO summit defending a Defence Investment Plan that is very unlikely to meet the 3-percent threshold his own former defence secretary called inadequate.

In his resignation letter posted on X on Thursday, Healey wrote that the Defence Investment Plan projects spending reaching only 2.68 percent of GDP by 2030 and accused Starmer and the Treasury of being unable and unwilling to commit the resources the armed forces require 123. A source close to Healey told AFP the Treasury offer included no firm date for reaching the three percent spending commitment 3. Starmer replied in a published letter defending the government's funding record and stating the DIP provides a "sustainable" path for armed forces modernisation 23. The plan, originally due in late 2025 and repeatedly delayed, is now scheduled for release before the NATO summit in Turkey on July 7 3.

Analysis
The Defence Investment Plan is very unlikely to carry a firm, date-certain 3-percent commitment before the July 7 NATO summit. High confidence rests on Healey's documented 2.68-percent 2030 projection, an AFP source confirming Treasury offered no date-certain guarantee, and Starmer's reply defending the plan without conceding the timeline. Secondary coverage relies on the same letters and wire rather than independent access. Healey's departure weakens Starmer's authority on defence at the moment allied scrutiny is sharpest. A successor must defend a plan the departed secretary called inadequate or seek concessions from a Treasury that has already refused. The timing against Makerfield supports a reading that the exit was primarily Labour leadership positioning rather than principled dispute. Whether the DIP names a firm date determines whether NATO partners treat UK commitments as binding in force planning through the 2030 window.

5 sources