This just took a serious turn.
President Trump says he has instructed to cut all trade with Spain after the Spanish government refused to allow the United States to use its air bases for possible military operations against Iran. This is not just a diplomatic disagreement: it is an economic retaliation directly related to military strategy.
Spain has supposedly blocked the use of U.S. military bases on its territory for attacks related to Iran. From Spain's perspective, it was about sovereignty and control over how its territory is used. From Trump's perspective, it is about loyalty and alignment at a high-risk geopolitical moment.