According to the official Downing Street readout published on 13 June 2026, the Prime Minister spoke with NATO Secretary General Mark Rutte on Saturday morning. The statement said both men agreed that Allies must respond together to shared and changing threats by strengthening collective defence and delivering more, faster. That framing matters because it places the call within NATO's immediate pre-summit agenda. Rather than announcing a new bilateral measure, the readout presents the exchange as a coordination call focused on readiness, defence spending and the pace of delivery across the Alliance.
Downing Street said the Prime Minister used the call to update Mr Rutte on plans for the Defence Investment Plan and confirmed that the government intends to publish it before the NATO summit in Ankara. The statement did not set out a publication date, spending totals or capability decisions. In practical terms, that makes the Defence Investment Plan the next document that departments, defence firms and allied governments will be watching closely. The main question is whether it will move beyond headline commitments and set out costed programmes, delivery timetables and a clearer account of where additional spending will go.
The NATO Secretary General, according to the UK readout, welcomed the United Kingdom's increased investment in defence as an important contribution to the Alliance and to meeting current threats. That is a useful diplomatic signal for ministers, because it shows the UK's spending message being received positively by NATO's senior leadership. It also places the government's defence policy in an alliance setting rather than a purely domestic one. UK investment is being presented not only as a national security choice, but as part of a wider effort to raise collective capability across NATO.
The Prime Minister also repeated the government's commitment to reach 3% of GDP on defence in the next Parliament. As stated, this remains a medium-term political commitment rather than an immediate fiscal change, and the readout does not provide a target year, a spending path or detail on whether the measure applies strictly to defence or to a broader security definition. That distinction matters for budget planning. A GDP-based target can signal strategic intent to allies and markets, but the real policy test will be how the Treasury and the Ministry of Defence turn that headline into annual settlements, procurement choices and force readiness outcomes.
Downing Street said the Prime Minister made clear that national security would remain the government's top priority and that the commitment would be backed by difficult spending decisions. The wording suggests that ministers want the defence pledge to be understood as a real fiscal choice rather than a summit-era message alone. For Parliament and outside observers, the missing detail now matters almost as much as the pledge itself. The readout does not explain which programmes will be accelerated, how investment will be phased, or what pressure could fall on other areas of public spending as defence moves higher up the government's priorities.
The statement ended by saying that the Prime Minister and Mr Rutte agreed to remain in close contact. That is standard diplomatic language, but in this case it also indicates that further coordination is likely as the Ankara summit approaches and as the Defence Investment Plan is finalised. Taken together, the 13 June 2026 readout is best read as a pre-summit positioning statement. The government has used a short official note to signal that the UK wants to arrive in Ankara with a stronger spending message, a published investment plan and a clear public restatement of its 3% defence ambition.