The president wrote on Facebook, Censor.NET reports.
"I stress once again that Ukraine will never recognize either the mock trial of Nadiia Savchenko, or the so-called verdict. It was a disgraceful travesty of justice that the aggressor country staged against the Ukrainian Officer with a capital "o", who, as befits all military, was defending her homeland from the enemy encroachment," the president wrote.
Poroshenko recalled that at a meeting of leaders of Germany, France, and Ukraine, Russian President Vladimir Putin promised to return Nadiia Savchenko to Ukraine after the so-called "adjudgement". "The time has come to fulfill the promise," the president stressed.
He also added that he was willing to exchange Savchenko for two Russian GRU operatives Yevgeny Yerofeyev and Alexander Aleksandrov, who had been detained in eastern Ukraine.
"I, in turn, am ready to hand over to Russia two Russian servicemen detained in our territory for their participation in the armed aggression against Ukraine. I am ready to ensure their departure to Russia through appropriate procedures immediately after completion of their trials. This approach is consistent with paragraph six of the Minsk arrangements on the exchange of all for all. And it should be done immediately. I am convinced that our joint efforts will be fruitful and Hero of Ukraine, Member of the Ukrainian Parliament, officer of the Ukrainian Armed Forces will return home, where all of us are looking forward to see her. Glory to Ukraine!" Poroshenko said.