The Short Version
Trump threatened to cut off all trade with Spain after it refused to allow U.S. use of joint military bases for operations against Iran. He also boasted the U.S. "could just fly in and use" those bases. However, no credible source — including those critical of Trump — characterized his remarks as a threat to invade Spain. The claim replaces documented economic threats with the far more extreme word "invade," which is not supported by the evidence.