"On the contrary, they are taking steps that indicate preparations for new offensive actions", continues the Ukrainian president.
"Under such circumstances, it is important that the unity of the world is not threatened", he writes further.
The statement comes ahead of the meeting between the President of the USA, Donald Trump, and Russia's counterpart Vladimir Putin in Alaska on Friday, to discuss an end to the war in Ukraine.
Zelenskyj has not received an invitation to the meeting, but writes in his post that "issues related to Ukraine's and Europe's security are discussed by all of us together".
