Emotional Prince William opens up about fatherhood and protecting Prince George

"Suddenly you start thinking, wow, there is stuff you want to safeguard for the future," said Prince William. "I've always believed it, but to actually really feel it as well, it's coming through powerfully now as well."

"I didn't really plan it that far in advance," said Prince William, speaking about the proposal. "I just knew I wanted it to feel comfortable where I did it and I wanted it to mean something, other than just the act of getting engaged.

"[Kate] understands what it means to me being in Africa."