“Signing a formula of Russian origin ... de facto means weakening or even lifting sanctions against Russia. And also: the legitimization of the occupied Donbass, the legitimization of the illegal referendum in Crimea and the illegal annexation of Crimea, ”Poroshenko wrote on his Facebook.

The ex-president of Ukraine emphasized that his party "European Solidarity" would not allow such a "scenario."

Earlier, the leader of the Batkivshchyna party, Yulia Tymoshenko, announced the inadmissibility of the Steinmeier formula for Ukraine.