In "Putin's People," reporter and Russia expert Catherine Belton discusses her new book about Vladimir Putin's rise to power. We cover the fall of the Soviet Union, Putin's hand in the downfall of Boris Yeltsin, the rise of the Russian oligarchs and the relationship between Donald Trump and Russia. Will Putin rule forever? There are some dark clouds on the horizon that may surprise you. Also, we will look back at 25 great episodes of The Nexus.