Editor's note: In an interview with Euronews, Bruno Lete discusses the European Union's call for de-escalation in the Kerch strait. 

The European Union has called for de-escalation in the Kerch strait. On Sunday Russian naval ships attacked Ukrainian ones accusing them of illegally entering Russian territorial waters.

The president of the European Council wrote on Twitter:

"I condemn Russian use of force in Azov Sea. Russian authorities must return Ukrainian sailors, vessels & refrain from further provocations."