The United States and China seem to be locked in a two-nation race for global supremacy. But don’t count Russia out as a superpower just yet. Kathryn E. Stoner is the deputy director of Stanford’s Freeman Spogli Institute for International Studies, and she joins guest host John McCaa to explain how Vladimir Putin has used his iron grip on domestic power to rachet up his country’s influence on international affairs. Her book is “Russia Resurrected: Its Power and Purpose in a New Global Order.”