How did two of the most powerful men on the planet — Donald Trump and Elon Musk — go from friends to foes embroiled in a public meltdown? Andrew Chang explains what drove a wedge between them and why it may be in their best interests to reconcile sooner rather than later. Images provided by Getty Images, The Canadian Press and Reuters. (Additional credits: 4:35 - MSNBC/YouTube; 4:37 - CNN/YouTube; 4:29 - CBS News/YouTube)
