Twenty-five years after the death of Princess Diana, we take a look back at how the relationship between her two sons, William and Harry, has changed over time. Princes William and Harry were just 15 and 12, respectively, when the Princess of Wales was killed in a car crash in 1997. In 2005, Harry said of William: "Every since our mother died, obviously we were close, but he is the one person on this earth who I can actually really ... we can talk about anything."This video explores how, today, their relationship is strained by a long-running rift. Sign up to our newsletters.