The ‘post-global’ NATO: Spain’s airspace ban signals the death of universal alliances

Spain has closed its airspace to U.S. military aircraft involved in operations related to the Iran conflict, signaling a departure from NATO's Cold War-era consensus that member states automatically supported American military initiatives. The move reflects growing reluctance among European allies to participate in military actions without independent strategic justification, particularly when operations risk escalating regional tensions. This development suggests NATO is transitioning from an alliance based on automatic burden-sharing toward a more selective model where nations evaluate military involvement case-by-case. Spain's decision underscores deepening fractures within the alliance over how members should respond to U.S. military operations, especially in conflicts where European interests diverge from American strategic priorities. The shift could reshape how the U.S. plans future military operations, requiring it to build coalitions tailored to individual conflicts rather than relying on blanket alliance support.