Ηνωμένες Πολιτείες Last updated: June, 2015 The United States became the world’s first nuclear weapon state in 1945, and remains the only state ever to have used a nuclear weapon in wartime. […]

http://www.nti.org/gmap/nuclear_russia.html?/ Χάρτης NuclearLast updated: April, 2015 Russia became the world’s second nuclear weapon state after it tested its first device at Semipalatinsk, Kazakhstan, on 29 August 1949