Multiple outlets report Defence Secretary calls from Labour’s Luke Murphy (as referenced in the coverage) that the UK could “pay a heavy price” if it promises a 3% defence spending goal without a clear plan. The reports say the criticism centres on the risk of making a commitment to spending levels without outlining how the government would deliver the target.
The Evening Standard and Yahoo UK News both attribute the message to the Defence Secretary, who says he remains committed to the overall defence goal and to the spending pledges the UK has made to Nato. The coverage frames the dispute as a question of whether a specific percentage target can be met through existing commitments and planning, rather than an argument against defence spending itself.
Across the reports, the central points are that the 3% figure is being discussed in the context of Nato-aligned spending commitments, and that the key concern raised is the absence of a detailed delivery plan. No figures beyond the 3% headline and the existence of Nato pledges are provided in the supplied text.