Pentagon believes NATO will commit to Trump's defense spending goals

The US President has said that NATO allies should increase defence spending to 5% of gross domestic product (GDP), compared with the current target of 2%.

"To be an alliance, you have to be more than flags. You have to be formations. You have to be more than conferences. You have to maintain combat readiness," Hegseth said as he arrived for a meeting of NATO defense ministers in Brussels.

"We are here to continue the work that President Trump started, which is to commit to 5% defense spending across this alliance, which we think will happen," Hegseth said, adding: "That has to happen before the summit in The Hague at the end of this month."

Diplomats say European allies understand that increased defense spending is the price of ensuring America’s continued commitment to the continent’s security, and keeping the United States in place would allow Trump to claim victory on his 5% demand at the summit, scheduled for June 24-25.

“We have to go further and we have to go faster,” NATO Secretary General Mark Rutte told reporters on June 4.

“A new defence investment plan will be at the heart of the NATO summit in The Hague,” he added.

In an effort to meet Mr Trump's 5% target, Mr Rutte has proposed alliance members increase defence spending to 3.5% of GDP and commit an additional 1.5% to broader security-related spending, Reuters reported.

Details of the new investment plan are likely to continue to be negotiated in the run-up to the NATO summit.

“We have to find a realistic compromise between what is necessary and what can actually be spent,” German Defense Minister Boris Pistorius said on June 4.

Countries remain divided over the timeframe for a new commitment.

Mr Rutte has proposed reaching the 5% target by 2032 – a date some eastern European countries see as too far away but others say is premature and unrealistic given current levels of spending and industrial production.

The 2032 target is "definitely too late," Lithuanian Defense Minister Dovile Sakaliene said on June 4, suggesting a 2030 target at the latest.

There is also an ongoing debate about how to define “defense-related” spending, which could include spending on cybersecurity and certain types of infrastructure.

“The aim is to find a definition that is precise enough to include only investments that are genuinely security-related, while being broad enough to allow for national specificities,” said a NATO diplomat.