Arriving for the European leaders' summit in Brussels on Thursday, Greek Prime Minister Alexis Tsipras expressed hope that the European Council will take absolutely clear decisions on two crucial issues: the leadership of the European Commission and Turkey's violations in the Cyprus Republic's Exclusive Economic Zone (EEZ).

Europe will have to take measures against Turkey "if the situation escalates at Cyprus' expense," said New Democracy leader Kyriakos Mitsotakis on Wednesday, interviewed on Star TV. 

European Union member-states are calling on the European Commission to propose appropriate measures against Turkey because of the continuing drilling in the Cyprus Republic's Exclusive Economic Zone, Commissioner for Enlargement Negotiations Johannes Hahn said on Tuesday during a press conference following a session of the Council of the EU.