October marks 60 years since the Cuban missile crisis, when the US and USSR were on the brink of nuclear war.
"The current crisis is far worse than the Cuban missile crisis," one historian recently told Insider.
But today's simmering Ukraine war poses 'far worse' nuclear dangers, experts say.
"The current crisis is far worse than the Cuban missile crisis, in part because during the Cuban missile crisis both Kennedy and Khrushchev were willing to discuss a way of walking back the confrontation.
"This crisis is more dangerous than the Cuban missile crisis," Andy Weber, a former assistant secretary of defense for nuclear, chemical and biological programs, recently told Politico.