Lord Robertson Turns on Starmer — The Peer Who Wrote Labour’s Strategic Defence Review Calls Britain “Underinsured,” Accuses Reeves of “Vandalism,” and Tells the FT the PM “Is Not Willing to Make the Necessary Investment”

The significance of the messenger

This is not a Reform backbencher shouting. Robertson ran NATO from 1999 to 2003. He wrote, at Starmer’s personal request, the review that was supposed to give Labour its defence legitimacy. He sits on the Labour benches in the Lords. When he says the PM and the Chancellor are presiding over “corrosive complacency” on British national security, the phrase is going to follow Reeves into every Treasury questions session until the Budget.

Robertson delivered the Edward Heath Annual Lecture at the Salisbury Guildhall under the deliberately loaded title “Can Britain Be Defended?” His answer, in front of a room of retired ambassadors and senior officers, was a qualified no. Britain is “underprepared,” “underinsured,” and “not safe.” The armed forces are “hollowed-out.” And the gap between the Prime Minister’s rhetoric on Russia, Iran and Atlantic security and the actual fiscal envelope being made available to pay for it is now, in Robertson’s view, a strategic liability.

The Reeves counts

The most damaging detail in the FT interview is the two numbers Robertson has been quietly collecting. In the November Budget speech, which lasted just over an hour, Reeves devoted exactly 40 words to defence. In the Spring Statement last month she used none. Zero. In a moment where British MoD officials are sitting in Amman planning a 40-nation Hormuz coalition, where the Armed Forces are running deployments in the Red Sea, Gulf and North Atlantic, where the PM is on stage at every press conference saying British security demands sacrifice — the Chancellor used zero words on the subject in her headline fiscal address.

Robertson’s exact framing: “We cannot defend Britain with an ever-expanding welfare budget. Britain’s welfare budget is now five times the amount we spend on defence.” Whether or not the reader agrees with that framing — and it is a politically loaded framing — it is now sitting in a Financial Times front-page interview under the name of the peer who wrote the government’s own review. Conservative Central Office and Reform’s press team were both emailing it to lobby journalists within an hour.

What it means for Reeves

The timing is catastrophic. 47% of Britons already expect Reeves to be sacked before year-end, per polling published last week. The Treasury is locked in pre-Budget fights with every spending department simultaneously. Starmer has spent the last fortnight pushing a narrative that Labour is the party of national security in a dangerous world. Robertson has just handed every opposition frontbencher a pre-packaged counter-narrative: the party talks security, the Chancellor doesn’t spend on it, and the man who wrote their own defence review thinks the country is unsafe.

Downing Street’s response

Number 10 issued a two-line statement noting the government had announced a “path to 2.5% of GDP on defence” and thanking Lord Robertson for his “continued contribution.” That is the language of a leadership that does not want to pick a fight it cannot win. Starmer has three weeks until the May 7 local elections and four weeks until the new EU rules bill, and he has no capacity to open a Budget war with one of his own peers. Reeves, who is the actual target of the intervention, said nothing on the record. She is going to keep saying nothing for as long as she can.

What comes next

Robertson has said publicly he is not joining another party and is not resigning the Labour whip. What he has done is set a fiscal trap for the November Budget: any defence number below a meaningful uplift from the current 2.3% of GDP will now be compared, publicly, to Robertson’s framing. Reeves will have to either raise defence spending or be the Chancellor who ignored her own side’s former NATO chief in the middle of a Middle Eastern war. Neither option is comfortable.