Russia said on Sunday that Ukraine was planning to stage a nuclear incident on its territory to pin the blame on Moscow ahead of a United Nations meeting, without providing evidence for the accusation.
Since the start of its invasion of Ukraine nearly a year ago, Russia has repeatedly accused Kyiv of planning "false flag" operations with non-conventional weapons, using biological or radioactive materials. No such attack has materialised.
Russia's defence ministry said in a statement that radioactive substances had been transported to Ukraine from a European country and Kyiv was preparing a large-scale "provocation".
