New Delhi, March 31 -- Spain closed its airspace to U.S. planes involved in the Iran war, officials said Monday, in another step by Europe's loudest critic of U.S. and Israeli military actions in the monthlong conflict.

The country earlier said that the U.S. couldn't use jointly operated military bases in the war, which Prime Minister Pedro Sanchez has described as illegal, reckless and unjust. Defense Minister Margarita Robles said that the same logic applied to the use of Spanish airspace.

"This was made perfectly clear to the American military and forces from the very beginning. Therefore, neither the bases are authorized, nor, of course, is the use of Spanish airspace authorized for any actions related to the war in Iran," Robles to...