"This offensive is going to cause serious humanitarian devastation", he said before a meeting with his EU counterparts in Luxembourg.
The minister also noted that the bloc should request to hold anti-Daesh coalition talks with Washington.
Paris and Berlin previously restricted arms sales to Turkey amid the operation in Syria, while US President Donald Trump warned he is working with Congress to establish "powerful sanctions" against Ankara. The Arab League has also condemned the Turkish government's move.
President Recep Tayyip Erdogan, however, refused to stop the offensive, stressing that Turkey would continue until its border is secured from the militants.
Ankara planned its operation in northern Syria to create a safe zone in the area with US forces. The American side later stated that it wouldn't participate in the action, so US troops had to leave several zones in order to maintain a safe distance from the fighting. Turkey is now fighting against the Kurdish-led SDF militants, which it considers to be affiliated with the Kurdistan Workers' Party (PKK), blacklisted by Ankara as a terror organisation.
Damascus has condemned the operation, noting it is yet another violation of Syria's sovereignty by the Turkish military.
* Daesh (ISIL/ISIS/IS/Islamic State) is a terrorist organisation banned in Russia