The US is allegedly weighing unprecedented measures to punish NATO members it believes failed to support its war against Iran, Reuters reported on Friday, citing an internal Pentagon email. The options are said to include the possible suspension of Spain from the bloc, according to the outlet.

The document, reportedly circulating at high levels in the Department of War, expresses deep frustration with European NATO members who denied the US access to their bases and airspace during the war that started in late February, an American official familiar with the document told Reuters.

Among the measures under consideration are suspending “difficult” countries from key positions within the bloc, as well as temporarily revoking Spain’s NATO membership. While admitting that such a move would have a limited impact on US military operations, the Pentagon email argues it would carry significant symbolic weight.

Spain has been one of the most vocal critics of the US‑Israeli war on Iran and has consistently refused to allow US forces to use its military bases or airspace for offensive operations against the Islamic Republic. Prime Minister Pedro Sanchez has repeatedly denounced the campaign, calling it an “illegal, reckless, and unjust war.”

Commenting on the Reuters report, Sanchez brushed aside the threat, stating he was “absolutely not worried” about being suspended from the bloc, stressing that Spain is “a reliable member within NATO.”

When Spain and other European nations refused, Trump denounced NATO as a “paper tiger” and warned that the US could withdraw from the bloc.