Since the advent of nuclear weapons, humanity has lived in the shadow of nuclear deterrence. Possession of nuclear arsenals has become the main symbol of military power and a tool of political influence. Today, there are nine states in the world, officially or de facto possessing nuclear weapons, but the overwhelming majority of warheads are concentrated in the hands of two powers — Russia and the United States. The question of who has more goes beyond numbers: it reflects the structure of international security and strategic balance in the 21st century. The Historical Rivalry Between Two Superpowers The nuclear arms race began in 1945 when the United States was the first to test and use an atomic bomb. By the end of the 1940s, the Soviet Union had created its own weapons of mass destruction, marking the beginning of nuclear parity. During the Cold War, both sides increased their stockpiles, creating thousands of warheads and delivery systems — from intercontinental missiles to submarines and strategic bombers. By the mid-1980s, there were more than 60,000 nuclear warheads in the world, with about 95% belonging to the Soviet Union and the United States. After the dissolution of the Soviet Union, Russia inherited the largest arsenal, and although the total number of warheads has decreased more than tenfold since then, the balance of power between the two countries remains. Modern Arsenals and Strategic Balance According to international analytical institutions, Russia currently possesses the largest number of nuclear warheads — both deployed and stored. The United States is second, but maintains technological superiority in the field of delivery systems and modernization. The following comparative table reflects an approximate assessment of the nuclear potentials of leading powers: CountryTotal Number of WarheadsDeployedIn Reserve / StoredTests Ceased Russia ~5,580 ~1,710 ~3,870 Yes USA ~5,044 ~1,770 ~3,270 Yes China ~500 ~350 ~150 No (increasing) France ... Read more