ISTANBUL — Turkey’s foreign minister announced on Sunday a ban on all Syrian aircraft entering his country’s airspace, days after the authorities discovered what they said were Russian military munitions on board a passenger plane bound for Damascus.

The announcement followed Syria’s ban on Turkish aircraft a day earlier and became the latest volley in an increasingly aggressive dispute between the two neighbors over Syria’s devastating civil war.

In televised remarks, the foreign minister, Ahmet Davutoglu, accused Syria of using civilian flights as a cover for transporting military equipment. Turkey had already banned military aircraft from entering its territory.