Hungary's Prime Minister Viktor Orban criticized Ukrainian President Volodymyr Zelenskiy, describing him as "a man in a desperate position" whose "war efforts" he would not support.

In a Facebook post directly addressed to Zelenskiy, late on Thursday Orban said: "You are a man in a desperate position who, for the fourth year now, has been unable or unwilling to bring a war to an end - despite the fact that the President of the United States has provided every possible assistance to do so."

"Therefore, no matter how much you flatter me, we cannot support your war efforts," the nationalist leader added, again rejecting financial aid for Ukraine.

Zelenskiy on Thursday criticized Europe for being a "fragmented kaleidoscope of small and middle powers" lacking the courage to act decisively and facing a dark future unless it stood up to U.S. and Russian power.

Orban has sought to associate Hungarian opposition leader Peter Magyar with Brussels and Ukraine, and accused Ukraine of wanting a change in government ahead of pivotal April elections.

"The Ukrainians will be active participants in the Hungarian campaign, because they have a vested interest in a change of government in Hungary," Orban told a briefing early on Friday in Brussels.

Orban said his government would launch a "national petition" that Hungarians can sign to "tell Brussels that Hungarians won't pay to Ukraine."