US defence secretary Pete Hegseth cautioned this week any peace deal would be unlikely to see Ukraine regain all the territory taken by Russia since 2014 and also poured cold water on the prospect of it joining NATO.
Ukraine's Zaporizhzhia nuclear power plant, the largest in Europe, has also been occasionally hit by drones during the war - but fears of a major accident have so far not materialised.
The Chernobyl strike came a few days after Donald Trump said he would meet Vladimir Putin to start peace negotiations after talking to the Russian leader on the phone.
However, Ukraine's President Volodymyr Zelenskyy and the UN International Atomic Energy Agency (IAEA) said radiation levels hadn't increased after Friday's incident.
Mr Zelenskyy told the Munich Security Conference the strike was a "very clear greeting from Putin and Russian Federation to the security conference".
