President of Ukraine Petro Poroshenko has underlined a necessity to clarify a concrete timeframe for implementation of the clauses of Minsk Agreements.

"We stress that all clauses of the Minsk Agreements must be fulfilled, and due to Russia's failure to perform its part of commitments, we firmly set an issue for 2016 to link all the steps envisaged by the Minsk Agreements to the certain date," Poroshenko told the journalists in Ternopil on Monday.

According to the president, all international talks between 'Normandy Four leaders' and in the frames of Trilateral Contact Group will be focused on this issue.

Poroshenko has stressed that Ukraine remains on the agenda for the international coalition. "As you know, in January chairmanship of OSCE was handed to our German friend and partner. We expect an extension of the mandate, along with the number and presence of the OSCE observers," the head of state said.