The North Atlantic Treaty Organization has said there is no mechanism to suspend or expel a member state, responding to reports that the United States could seek action against Spain over its stance on the war with Iran. The statement followed a Reuters report citing a United States official who referred to an internal Defense Department email discussing possible measures against allies seen as not supporting Washington’s campaign.

According to the report, the email suggested reviewing American diplomatic backing for European overseas territories, including the Falkland Islands, and considering limiting certain roles for what it described as 'difficult' countries within the alliance. The document did not propose withdrawing from the alliance or closing military bases in Europe.

Spain has refused to allow its air bases to be used for strikes on Iran. Prime Minister Pedro Sanchez dismissed the report, saying his government acts on official positions rather than emails and supports cooperation with allies within international law. Meanwhile, Prime Minister Keir Starmer has said deeper involvement in the conflict is not in the United Kingdom’s interest, despite allowing some use of British bases.

President Donald Trump has repeatedly criticized allies for what he views as insufficient support, describing the alliance as a 'one-way street'. A Defense Department spokesperson said the administration is considering options to ensure allies contribute more, but declined to comment further on internal discussions.