Spain has rejected a U.S.-backed proposal for NATO members to raise defense spending to 5% of GDP, becoming the first alliance country to oppose the plan, Reuters reported on June 19.

The rejection adds pressure to the transatlantic debate ahead of the NATO summit in The Hague on June 24–25, which has beenreduced to a single session focused on defense spending and alliance capabilities.  

In a letter to NATO Secretary General Mark Rutte, Spanish Prime Minister Pedro Sanchez called the proposed target "unreasonable" and warned it would undermine broader European efforts to build an integrated defense ecosystem.

"Committing to a 5% target would not only be unreasonable, but also counterproductive," Sanchez wrote, arguing it would "move Spain further away from optimal spending."

Spain estimates that its armed forces require spending equal to 2.1% of GDP to meet national military objectives, below the U.S.-endorsed threshold but above NATO's 2% benchmark.

U.S. President Donald Trump has repeatedly accused NATO members of underfunding their militaries, pushing for raising defense spending benchmark to 5% of GDP.

While no other NATO members have formally rejected the proposal, most have remained noncommittal. Poland, the Netherlands, and Sweden have expressed willingness to consider the 5% target.

In 2024, only 23 alliance members met the 2% target, according to NATO estimates. Poland was ahead of all members with 4.12% of GDP allocated to defense, followed by Estonia (3.43%) and the U.S. (3.38%).

Rutte said on June 17 that all NATO countries are on track to meet the 2% threshold in 2025.

Spain, governed by a Socialist-led coalition, maintains a sharply different defense posture than the U.S. administration.

While Madrid supports Ukraine, it has taken a more cautious stance on the Middle East, including distancing itself from U.S. policy on Israel.

Diplomacy in crisis: G7 letdowns reveal limits to Western solidarity on Ukraine

KANANASKIS, Canada — The Group of Seven (G7) Leaders’ Summit ended on June 17 with no joint statement in support of Ukraine, no commitments to provide desperately needed U.S. weapons, and no meeting between President Volodymyr Zelensky and U.S. President Donald Trump. The Ukrainian delegation headed into the summit,

The Kyiv IndependentDmytro Basmat