The allegation comes a day after the last remaining nuclear arms control treaty between the US and Russia lapsed, leaving the world’s largest nuclear superpowers without limits on their arsenals for the first time in decades.
President Donald Trump and other top officials in his administration have made clear they will no longer abide by the limitations of the New START Treaty and instead have argued they need a new deal to address threats from Moscow and Beijing. And Trump last year called for the resumption of US nuclear weapons tests.