The United States on Tuesday revealed the number of warheads in the country’s nuclear arsenal for the first time in four years, ending a Trump-era blackout on the figure. The number of nuclear weapons — both active and inactive — in the US military’s stockpile stood at 3,750 as of September 30, 2020, according to the data released Tuesday. The figure is down from 3,785 in 2018. As recently as 2003, the United States’ nuclear weapon stockpile was just above 10,000. In 1967, at the height of the cold war with Russia, the country’s nuclear reserve peaked with a total...