In a letter responding to Rutte’s proposals for next week’s Nato summit in the Hague, first reported by the Spanish newspaper El País, Sánchez declared his opposition for the proposed change arguing “it is not necessary to fulfil our commitments to the alliance.”

He explained that the figure “has nothing to do with the level of commitment to collective defence,” with Spain confidence it can do enough with lower spending.

He added that adopting the target would have adverse effects for the Spanish economy, as it would force the government to raise taxes, cut public services and slow down its plans on green transition. “We choose not to make those sacrifices,” he reportedly said.

The paper said that the new Nato target had been expected to be adopted unanimously, but Spain’s objection could now trigger further discussions on its adoption.