Prince Harry said he believes young people hold "the solutions to some of the world's biggest problems" as he spoke at the inaugural summit of Barack Obama's foundation in Chicago.

The Prince said the younger generation had "turned me into an optimist", as he talked about meeting young people around the world.

He said they gave him "all of my passion and inspiration", adding: "The younger generation... are the best connected, the most passionate I think we've ever had.

"So what we need to do is we need to create a platform so they can be heard, because they have the solutions to the some of the world's biggest problems."

The 33-year-old spoke openly about how his late mother, Princess Diana, had inspired him to use his role to help others, and talked of the work of the Royal Foundation, which he set up alongside his brother William in 2009.