President Joe Biden said on Thursday the risk of a nuclear war has never been as high since the 1962 Cuban Missile Crisis, in a striking message about what he called the potential for “armageddon.” Biden delivered the warning as threats made by Russian President Vladimir Putin of using weapons of mass destruction in the invasion of Ukraine put the U.S. military on alert. “We have not faced the prospect of armageddon since Kennedy and the Cuban Missile Crisis,” Biden told a crowd at a fundraiser in New York. “We are trying to figure out: What is Putin’s off ramp? Where does he find a way out? W…