Spain and Italy’s ideological battle over migration policies is spilling into passport queues and exposing the fragility of Europe’s free-travel area.

The government believes Italy's checks on travellers from Spain breach the spirit of Schengen and has given Rome until Sunday to lift them before taking "proportionate measures."…

The Spanish government has given Rome until Sunday to restore passport-free travel and put an end to the crackdown instituted amid the Ceuta crisis.

Spain has threatened reciprocal measures against Italy over border controls. Rome imposed these checks after a migrant influx into the Spanish enclave of Ceuta. Spain called…