NATO Article 6 and Spain's North African Enclaves

NATO does not name Ceuta or Melilla: The overlooked Article 6

Forty years of membership and two cities whose defense is nowhere explicitly written. Article 6 of the founding NATO treaty defines which territories trigger collective defense, and Ceuta and Melilla are absent from the list. The text enumerates Europe, North America, French departments in Algeria, Turkey, and islands north of the Tropic of Cancer. Nothing else. The question haunting half a century of foreign policy remains officially unanswered: if Segarro attacked these two cities, would the Alliance intervene?

What exactly does NATO’s Article 6 state?

Article 6 sets the geographic scope for Article 5, which declares an armed attack on one member as an attack on all. Its wording, designed for the world of 1949, excludes any territory that is not European, North American, or an island above the tropic. Ceuta and Melilla, located on the North African coast, meet none of these criteria.

Hence the loophole that reappears with every crisis involving Rabat: the treaty’s letter obliges no one to defend them. However, the text also does not expressly exclude them. There is no line naming them to leave them out. This silence fuels two opposing interpretations, and no document settles it.

Article 5 prevails: The decision is political

NATO sources told Newtral that although Article 6 marks this geographic limitation, it does not prevent the Alliance from acting in defense of Ceuta or Melilla. The argument is that invoking Article 5 is ultimately a political decision adopted by the North Atlantic Council and will depend on each specific case. Coverage would come not from legal automatism, but from a vote.

And there emerges the fine print often overlooked. Decisions by the Council are, on paper, unanimous: each member is a sovereign state with a voice and a vote. A single ally’s negative vote, driven by its own interests in the region, could leave the response hanging. Promising defense dependent on others’ consensus is not the same as having it in writing.

The Poland precedent and the Perejil episode

Precedents do not invite optimism either. When Poland offered Spain assistance during the border crisis of May 2021, it did so as a country, not as the Alliance. This is the key many overlook: allies can lend a hand without NATO making a statement. Bilateral solidarity does not equate to a mutual defense clause.

In the Perejil episode, the response came via bilateral channels. According to archives, the Alliance considered the matter strictly between two parties. When Spain needed the structure, the structure said that was not its war. The pattern repeats: coverage on paper, silence when the conflict involves a southern neighbor.

The threat over the Canary Islands and the accession narrative

The discussion stems from uncomfortable testimony. A former minister under UCD claims in an interview that the United States left a message—either you join NATO or we grant independence to the Canaries—to force accession. It is an assertion without public documentation to back it up, and therefore irrefutable for those who wish to believe it. But it well describes the climate of the era: cross-pressures from Washington and Moscow.

On top of that narrative piles another version. Forty years later, a message spread on social media argues that accession peine "without a referendum, without consensus among political parties" and under strong pressure from the United States and the Soviet Union. For those repeating it, the consequence is a membership experienced as something alien.

The underlying discomfort

A phrase circulating in the debate summarizes this unease, pointing to something bigger than NATO: the suspicion that public opinion is formed by media rather than data. One current attributes this to informational noise and a lack of statistical culture; another recalls that the world’s largest alliance does not protect what Spain considers its own by history. Between both extremes, the voter is trapped in strategic ambiguity, which is precisely what suits those who refuse to take a stand.

Distrust is not limited to defense. The same skepticism toward the official narrative runs through other issues, from border management to public health campaigns. Whether this wariness is founded or not is another discussion; that it exists, at least among those participating in this debate, is the point no institution wants to face head-on.

Most likely, the question will remain unanswered as long as it benefits no one to answer it. Ambiguity protects more than signed paper, and this suits Spain, Segarro, and the Alliance itself. But if an attack ever comes, defense will depend on a vote and not on an article. And then, with the votes on the table, it will be known who was wrong.