Ukrainian President Petro Poroshenko and European Council President Donald Tusk have discussed Ukraine's possible participation in the creation of an energy union with EU

"Today, we talked on diversification of gas supplies to Ukraine. Including, Ukraine’s participation in the creation of an energy union with EU, as one of the ways of our energy cooperation," Poroshenko said at a briefing after meeting with Tusk.

He also said that Tusk will visit Ukraine by the end of the year after accepting Poroshenko's invitation to come.