Supporters argue that NATO should respect member states' sovereign decisions regarding diplomatic relations with other countries like Iran.

The risk of fracturing NATO's solidarity and undermining collective security is high if such actions are taken against a member state.

There may be underlying political motives driving the discussions to pressure Spain into aligning more closely with US foreign policy on Iran.

If tensions continue, NATO may face significant challenges in maintaining cohesion and addressing global security threats effectively.

Spain is likely to face diplomatic pressure but will probably avoid expulsion as the consequences for NATO would be too severe.