President Trump this week issued a direct threat: “Cut off all trade with Spain” and “we don’t want anything to do with Spain” after Prime Minister Pedro Sánchez refused U.S. access to the Rota and Morón air bases for current Iran operations. Foreign Minister José Manuel Albares stated clearly: “Spanish bases are not being used for this operation.” Fifteen American aircraft, including refueling tankers, were relocated within hours. The Iran conflict has already scrambled global shipping lanes through the Red Sea and Strait of Hormuz; now the Mediterranean itself risks turning into the next vulnerable theater — and Spain’s decision leaves NATO’s southern gateway exposed at a critical moment when every day of delay costs billions in disrupted trade and higher energy prices across Europe.

The geography is unforgiving. The Strait of Gibraltar is the narrow bottleneck connecting the Atlantic and Mediterranean, handling roughly 20 percent of global maritime traffic on any given day. Iran and its proxies have already demonstrated the ability to disrupt key routes elsewhere with missiles, drones, and naval harassment. Any escalation that reaches Algerian ports or Libyan coastlines could quickly threaten commercial vessels carrying oil, LNG, and container cargo, as well as naval resupply lines for U.S. and allied forces. Spain holds the northern side of the strait, yet its current political stance under Sánchez — reluctance on U.S.-led strikes outside a UN framework, chronic NATO spending shortfalls, and public criticism of the operation — has turned that position into a potential liability rather than a strength. Blocking allied operations while the war is live hands adversaries a tactical opening at Europe’s most sensitive energy and migration chokepoint.

Algeria complicates the picture further. Long aligned more closely with Russia through arms deals and energy partnerships, and maintaining diplomatic and economic contacts with Tehran, Algiers has shown limited enthusiasm for the U.S.-Israel campaign. Its western Mediterranean ports and longstanding influence in the region could become conduits for proxy activity — whether through tolerated smuggling networks or indirect naval support — if tensions rise in the coming weeks. Spain’s hesitation next door amplifies the exposure: a toxic combination of disrupted shipping routes, soaring energy costs already up 15-20 percent in parts of Europe since the conflict intensified, and renewed migrant flows heading toward Spanish coasts, the Canary Islands, and onward into the EU. Recent weeks have already seen increased boat departures from Libyan and Tunisian shores, fueled by war-driven economic desperation.

Morocco occupies the southern shore of the same strait. Its location alone makes it a factor in any serious Mediterranean strategy — coast guard operations, energy pipelines, and migration routes all intersect there. Recent history shows practical cooperation on patrols and counter-smuggling is possible when interests align, but this is simply geography and self-interest at work, not a special relationship. In an Iran war environment already driving up energy prices and boat departures from unstable areas like Libya and Tunisia, the southern flank cannot be ignored if Washington wants to prevent the chaos from spreading northward.

Trump’s trade cutoff threat is straightforward leverage. It underscores a basic reality: when a NATO ally blocks operational access during active conflict, Washington has tools to respond. The broader question is how to stabilize the southern perimeter without relying solely on Madrid. The Mediterranean’s future security — shipping lanes, energy flows, migration control — requires looking at all options along the strait, including the southern side, to avoid repeating the vulnerabilities exposed in the Red Sea.

Washington needs a pragmatic recalibration. First, explore expanded naval and intelligence cooperation options south of Gibraltar to secure the chokepoint against spillover threats, including joint monitoring of shipping lanes that could otherwise be exploited by Iranian proxies. Second, link any U.S.-Spain reset to concrete deliverables on base access, burden-sharing for migration patrols, and counter-proliferation commitments, because half-measures have already proven costly in this war. Third, integrate energy security planning across the strait to reduce vulnerability to Iran-induced shocks, treating pipeline routes and maritime corridors as strategic assets rather than political favors — this would shield European economies from further price spikes that are already straining budgets from Madrid to Berlin.

The Iran war is revealing structural weaknesses across NATO’s southern edge. Spain’s base refusal and policy hesitation have highlighted the gap between alliance rhetoric and operational reality. Geography dictates that the southern shore of the Strait of Gibraltar will remain relevant no matter how the conflict evolves. Trump is applying pressure where it is due. The smarter move is to build a posture that accounts for that full geography — north and south — before the naval chaos spreads further. Europe’s energy stability and America’s Mediterranean interests now require exactly that adjustment.

© The Times of Israel (Blogs)