United States\nRussia\nUnited Kingdom\nFrance\nPeople's Republic of China\nIndia\nPakistan\nIsrael\nNorth Korea (claimed, not totally proven yet)\n\nCountries formerly possessing nuclear weapons:\n\nUkraine\nBelarus\nKazakhstan\nSouth Africa\n\nCountries formery possessing nuclear programs:\n\nArgentina\nAustralia\nBrazil\nEgypt\nIraq\nLibya\nPoland\nRomania\nSouth Korea\nSweden\nSwitzerland\nRepublic of China\nYugoslavia\n\nCountries capable of producing nuclear weapons:\n\nCanada \nGermany \nJapan\nItaly\nLithuania\nNetherlands\nSaudi Arabia