“Military steps are being taken, we are preparing for them.
We are mentally ready, ”RIA Novosti quotes Zelensky as saying at a press conference.
He noted that technical training is underway, the formation of brigades, offensive units.
The Ukrainian leader added that the military is trained not only in Ukraine, but also in other countries.
Earlier, the head of the Main Intelligence Directorate of the Ministry of Defense of Ukraine, Kirill Budanov, announced Kyiv's intention to return Crimea under the control of Ukraine.
The director of the Foreign Intelligence Service, Sergei Naryshkin, called Ukraine's "return" of Crimea impossible.
Crimea became a Russian region after a referendum held there in March 2014: the majority of residents voted for reunification with Russia.