Andy Burnham would need to pass a “Moscow test” for his policies if he becomes prime minister, according to former Chief of the Defence Staff Admiral Sir Tony Radakin.
Burnham, the frontrunner to succeed Sir Keir Starmer, has previously advocated requiring new legislation to pass a “Makerfield test,” referencing his recently won constituency.
In an interview with the BBC’s Sunday with Laura Kuenssberg, Sir Tony emphasized that the UK’s next leader must adopt a wartime-like approach to governance amid growing global threats.
His comments coincided with the government’s preparation to release its long-delayed defence spending strategy.
Sir Tony stressed that future prime ministers must uphold the commitment to raise defence spending to 3.5% of GDP by 2035, citing current military capabilities as “critically under-resourced.”
Talks in Whitehall continue over funding for the Defence Investment Plan (DIP), with the government pledging to publish it ahead of the NATO summit in Turkey on 7 July.
Defence Secretary John Healey and Armed Forces Minister Al Carns—who has not ruled out challenging Burnham for Labour leadership—resigned from their roles this month, citing inadequate funding for the plan.
Sir Tony stated: “Alongside the Makerfield test, there must be a Moscow test. How does Moscow perceive the UK? Do we appear a robust NATO ally? A credible nuclear power? A steadfast U.S. partner?
“These factors are fundamental to national security.”
When asked for guidance to Burnham as prime minister, Sir Tony warned: “Your primary duty is safeguarding the nation—assume the mindset of a wartime leader.
“This demands prioritizing investments that ensure security.”
He cautioned that current defence spending risks breaching NATO commitments and straining alliances with the U.S.
“Military readiness requires sustained funding—not just for operations, but for maintenance, supplies, and equipment availability across all forces.”
Under Sir Keir’s leadership, defence expenditure has risen, with the government aligning with NATO allies to target 3.5% GDP spending by 2035.
However, Healey argued the draft DIP fell short of necessary funding, warning it could trigger operational reductions.
Reports suggest the Ministry of Defence sought an additional £28bn by decade’s end, yet received only £10bn.
All departments have been instructed to reduce budgets to accommodate the increase.
Healey’s replacement, Dan Jarvis, affirmed Burnham’s grasp of modern security challenges, stating: “National security will remain the top priority for any Labour prime minister.
“While transitions occur, core policies will endure—protecting the country through every feasible means.”
Jarvis confirmed the DIP will be published prior to the July NATO summit.
