Spain has closed its airspace to US planes involved in attacks on Iran, a step beyond its previous denial of use of jointly-operated military bases, Defence Minister Margarita Robles said on Monday.
"We don't authorise either the use of military bases or the use of airspace for actions related to the war in Iran," she told reporters in Madrid.
Spanish newspaper El Pais had first reported the news on Monday, citing military sources.
The closure of the airspace forces military planes to bypass NATO member Spain en route to their targets in the Middle East, but it does not include emergency situations, El Pais added.
"This decision is part of the decision already made by the Spanish government not to participate in or contribute to a war which was initiated unilaterally and against international law," Economy Minister Carlos Cuerpo said during an interview with radio Cadena Ser when asked if the decision to close Spain's airspace could worsen relations with the United States.
Spanish Prime Minister Pedro Sanchez has been one of the most vocal opponents of the US and Israeli attacks on Iran, describing them as reckless and illegal.
President Donald Trump has threatened to cut trade with Madrid for denying the US use of Spain's bases in the war.
President Donald Trump warned on Monday that Iran's energy plants and oil wells would be obliterated if it did not open the Strait of Hormuz, after Tehran described US peace proposals as "unrealistic" and fired waves of missiles at Israel.
President Donald Trump said on Monday the United States was in talks with a "more reasonable regime" to end the war in Iran but repeated his warning to Tehran to open the Strait of Hormuz or risk US attacks on its oil wells and power plants.
Israeli airstrikes killed at least four people in the Gaza Strip on Monday, local health officials said, in the latest round of violence since a US-brokered ceasefire took effect more than five months ago.
Spain has closed its airspace to US planes involved in attacks on Iran, a step beyond its previous denial of use of jointly-operated military bases, Spanish newspaper El Pais reported on Monday, citing military sources.
A United Nations peacekeeper has been killed in southern Lebanon overnight, prompting condemnations on Monday after a weekend in which Lebanese journalists and medics were killed in Israeli strikes.