Austria has blocked United States military aircraft from using its airspace for operations against Iran, citing its neutrality laws.

Officials said several U.S. requests had been made, but each case would be reviewed individually.

Other European countries, including Spain, have taken similar steps, restricting American warplane access amid the ongoing conflict.

Meanwhile, the United Kingdom has allowed limited U.S. use of its bases for defensive purposes, the Metro has reported.

The situation highlights growing tensions between Washington and its allies as the conflict with Iran continues.