Weapon of mass destruction
The only country to have used a nuclear weapon in war is the United States, which dropped two atomic bombs on the Japanese cities of Hiroshima and Nagasaki during World War II. There are eight countries that have declared they possess nuclear weapons and are known to have tested a nuclear weapon, only five of which are members of the NPT. The eight are China, France, India, North Korea, Pakistan, Russia, the United Kingdom, and the United States.
Israel Defense Forces
Israel is known to have developed nuclear weapons. Israel does not officially acknowledge its nuclear weapons program. It is thought Israel possesses between one hundred and four hundred nuclear warheads. It is believed that Jericho intercontinental ballistic missiles are capable of delivering nuclear warheads with a superior degree of accuracy and a range of 11,500 km. Israeli F-15I and F-16 fighter-bomber aircraft also have been cited as possible nuclear delivery systems (these aircraft types are nuclear capable in the US Air Force). The U.S. Air Force F-15E has tactical nuclear weapon (B61 and B83 bombs) capability. It has been asserted that Dolphin-class submarines have been adapted to carry Popeye Turbo Submarine-launched cruise missiles with nuclear warheads, so as to give Israel a second strike capacity.