As reported by Censor.NET citing Interfax-Ukraine, this was stated by Ukraine's President Petro Poroshenko during the UN General Assembly debates "The situation in the temporarily occupied territories of Ukraine" on Wednesday in New York.
"Military experts unequivocally determine that an armed group on the Ukraine-Russia border is an offensive strike group. This has nothing to do with defence. They are intended for a military strike. Russia is preparing for this. Therefore, further escalation to the level of a full-scale war is no longer an unrealistic prospect", - said Poroshenko.