The President of the European Parliament David Sassoli on Thursday called for tougher EU sanctions against Turkey because of Ankara’s invasion of north Syria.

Sassoli also told EU leaders that Turkey’s membership talks with the bloc should be suspended, Reuters reports.

“Sanctions should be much tougher and include existing contracts,” the Italian center-left politician told reporters in Brussels.

Earlier this week, EU governments committed not to sign new arms sale deals with Turkey, but did not take any action against existing ones.