'My jaw dropped': Annie Jacobsen on her scenario for nuclear war

Annie Jacobsen was a high school student in 1983, when ABC television broadcast the film The Day After, about the horrors of nuclear war. She never forgot the experience. More than 100 million Americans watched and were terrified too. One of them lived in the White House. According to his biographer and his own memoirs, it helped turn Ronald Reagan into a nuclear disarmer in his second term. Not long after, the world's stockpile of nuclear warheads peaked and began to decline rapidly, from 70,000 to just over 12,000 currently, according to the Federation of American Scientists. That is still…