The Kremlin’s ability to shape global affairs appeared decimated following the collapse of the Soviet Union in 1991. Coupled with the internal instability that gripped Russia in the 1990s, Moscow struggled to develop a coherent and effective foreign policy for almost a decade. But under President Vladimir Putin, Russia has steadily reemerged as one of the most significant countries in the world—and one that is increasingly willing to challenge the United States. In Budget Superpower, geopolitics journalist John P. Ruehl explores how Russia has achieved this feat, despite its relatively...