Morón Air Base and Spanish restrictions on U.S. military operations

The Morón Air Base in Seville, Spain, serves as a strategic military installation used by the Spanish Air and Space Force and the United States under bilateral defense agreements dating back to the 1950s. While under Spanish command, the base hosts the U.S. 496th Air Base Squadron, which manages support for American aircraft and personnel.

Recent tensions have emerged regarding the scope of Spanish restrictions on U.S. military activities. In March 2026, the Spanish government denied the use of the Morón and Rota bases for military operations against Iran, citing the need for prior authorization for uses exceeding the defense cooperation agreement. However, reports indicate that U.S. KC-10 Extender tankers were observed refueling at the Gando Air Base in Gran Canaria in late September while conducting operations in the Middle East. This refueling service was reportedly provided by the Spanish Ministry of Defence, raising questions about the effectiveness and reach of Spain’s restrictions on U.S. military logistics within its territory.