This year marks Queen Elizabeth II’s Platinum Jubilee, her 70th year as Queen of the United Kingdom. As the world prepares to celebrate an icon, the British royal establishment is working quietly behind the scenes to prepare the stage for Prince Charles to replace his mother and become King. It’s the moment he was destined for – and at 73, he’s been waiting a long time. But as his moment approaches, so does widespread apprehension: Can Prince Charles fill his mother’s shoes? Will the people accept him as king? Is there even a place for monarchy in our modern world? In Born to Rule, NBC’s Keir Simmons talks to journalists and royal insiders who’ve followed Prince Charles for decades to help us understand the man who will be king.