Even after decades of reducing their arsenals, the United States and Russia still possess more than 90 percent of the world’s nuclear weapons… In recent years, however, geopolitical tension has undermined “strategic stability”—the processes, mechanisms, and agreements that facilitate the peacetime management of strategic relationships and the avoidance of nuclear conflict, combined with the deployment of military forces in ways that minimize any incentive for nuclear first use. – Foreign Affairs Photo: Sputnik / Alexei Nikolsky / Kremlin