ToplineSpain closed its airspace to U.S. planes involved in the country's ongoing attacks in Iran, as the country continues to be the most outspoken European opponent to the Trump-led war in Iran.Am American military aircraft spotted flying over the Netherlands en route to Tel Aviv to support the war in Iran.NurPhoto via Getty ImagesKey FactsSpain is refusing entry to its airspace to any U.S. military aircraft involved in the war, including those stationed in other countries or looking to refuel, Spanish newspaper El Pais first reported and Defense Minister Margarita Robles confirmed to reporters.The restriction forces military ​planes to go around Spain en route to their targets in the Middle East but will not be enforced in emergency situations, according to El Pais.The airspace restriction comes weeks after foreign minister José Manuel Albares said the U.S. could not use jointly operated bases in the country to conduct strikes in Iran, drawing the ire of President Donald Trump who then threatened to cut off all trade with Spain.Neither Trump nor the White House have publicly responded to the airspace news. Get Forbes Breaking News Text Alerts: We’re launching text message alerts so you'll always know the biggest stories shaping the day’s headlines. Text “Alerts” to (201) 335-0739 or sign up here: joinsubtext.com/forbes.Crucial Quote“We don’t want anything to do with Spain,” Trump said in response to the country’s restrictions on military bases. Key BackgroundSince the U.S. and Israel began strikes on in Iran on Feb. 28, thousands have been killed in Iran, hundreds of American troops have been hurt and at least 13 U.S. service members have been killed. U.S. conditions on ending the war include Iran’s dismantling of its nuclear weapon program, but Iran reportedly rejected one proposal last week. U.S. deployed more troops to the Middle East over the weekend, where they now total over 50,000. Spain has led the opposition to the war and France has expressed concern it violates international peace law. German Chancellor Friedrich Merz initially said he was "on the same page" as Trump when it came to the Iran War but the nation has since become more critical. Among NATO allies, only Canada and four smaller European nations have voiced support for the U.S.-Israel strikes.TangentEarlier this month the Swiss ​government rejected two U.S. flyover requests related to the Iran war, citing neutrality rules that allow only humanitarian and medical transports to pass over the country. Earlier this year, Saudi Crown Prince Mohammed bin Salman told Iranian leaders he would not allow Saudi airspace to be used for military actions against Iran. Trump last week said the prince is “fighting with us,” but Saudi leaders have not publicly endorsed the war or allowed its territory and airspace to be used for American attacks against Iran. Further ReaingForbesTrump Insists Iran Regime Change Has Happened And Says He Could Seize Its OilBy Siladitya RayForbesIran Warns Military Is ‘Waiting’ As Pentagon Reportedly Plans For Ground Invasion PossibilityBy Zachary FolkForbesIran Allows 20 More Ships To Pass Through Strait Of Hormuz, Pakistan Says: ‘Meaningful Step Toward Peace’By Sara Dorn