When Russian President Valeri Volodin's ambitions are foiled in Dagestan, he faces a difficult choice. The oligarchs who support him expect a constant flow of graft, but with energy prices cratering, the Russian economy sputters to a virtual halt. Unable to grow the Russian market at home, his hold on power relies on expansion abroad -- a plan that has been thwarted by the United States in the past. But this time Volodin has determined that an indirect...