b'Queen Elizabeth II died today at the age of 96. As the longest-serving British monarch ever, she has seen numerous world leaders come and go. CNN Political Director David Chalian takes a look back at her relationships with some of the 14 US Presidents who have served during her reign.\\nTo learn more about how CNN protects listener privacy, visit cnn.com/privacy\\nLearn more about your ad choices. Visit megaphone.fm/adchoices'