Turkey has not de-escalated its stand-off with Greece in response to diplomatic outreach, European Council chief Charles Michel said on Friday (4 December) and warned that EU member states would now consider “the means at our disposal”, which most probably means sanctions.

“I think that the cat and mouse game needs to end,” Michel said referring to Turkey’s repeated incursions into Greek waters with gas exploration vessels ahead of an EU summit on 10-11 December.

On 30 November, Turkey’s Oruç Reis survey vessel returned to the southern port of Antalya from Mediterranean waters. The same happened ahead of a previous EU summit in October, when Turkey avoided sanctions and EU leaders decided to revisit the issue in December.