President Donald Trump announced Wednesday that he has ordered the U.S. Treasury to halt all bilateral trade with Spain [1].

This move signals a severe escalation in diplomatic tensions between the U.S. and a key European ally, potentially destabilizing transatlantic economic ties and NATO cohesion.

Speaking during a NATO summit in Ankara, Turkey, Trump said he directed Treasury Secretary Scott Bessent to cut all commercial business with the nation [1]. He described Spain as a "terrible partner" within the alliance, alleging that the country does not participate or pay its required share [2].

"Spain is a lost cause," Trump said [2]. "By the way, we no longer want to do any commercial business with Spain. I want them to cut it. Spain is a terrible ally in NATO. They do not participate" [2].

The president further criticized Spain's defense spending and its perceived lack of support for U.S. strategic objectives. He said that he does not want to have anything to do with the country, calling it a "terrible partner" [1].

Market reactions were immediate following the announcement. The IBEX 35 lost more than 500 points [3]. Additionally, oil prices rose five percent [3].

Reports on the specific trigger for the trade cut vary. Some sources attribute the decision to Spain's defense-spending stance [1]. Other reports suggest the friction is linked to U.S. perceptions of Spanish actions regarding Greenland, or a refusal by Prime Minister Pedro Sánchez to allow U.S. bases to be used against Iran [4, 5].

Trump also suggested a broader military disengagement, including the potential withdrawal of U.S. troops from both Spain and Italy [6].

"Spain is a lost cause," Trump said.

The decision to weaponize trade against a NATO ally over defense contributions represents a shift toward a transactional foreign policy. By linking commercial access to military spending and strategic compliance, the U.S. administration is placing direct economic pressure on European nations to meet specific security benchmarks, which may lead to further volatility in global markets and a reconfiguration of the alliance's internal trust.