Saudi Arabia's royal purge 'doesn't look so bad' for long-term investors, analyst says

"Whatever way you look at it, Saudi Arabia had a massive, great big wall in front of it. It had a population bubble, it had an unemployment problem and it was not doing really that much to solve any of these things," Stephens said. "Now what you might say is if you make an omelet then Mohammad bin Salman had to break a few eggs, and so if you are looking at the medium to long-term, actually it doesn't look so bad."