Ukraine warns that Russian military moves pose a threat to its 4 nuclear plants

VIENNA – Ukraine-Russia tensions have spilled over to a U.N. nuclear meeting, with Kiev warning that a Russian military invasion could result in damage to its nuclear reactors and Moscow dismissing the scenario as "hysterics."

A Ukrainian statement Wednesday to the board of the International Atomic Energy Agency said "aggression of regular military formations" could spread radiation contamination in Ukraine and neighboring countries.

Russia, in turn, said Ukrainian authorities have been seized by the "very depth of hysterics" and "are hallucinating about some kind of phantom danger."

IAEA chief Yukiya Amano told the meeting countries are responsible for the safety of their nuclear installations but the IAEA can send a nuclear security review team if requested by Ukraine.

One of Ukraine's four nuclear plants is in the predominantly Russian-speaking east.